The Best Underwear for Working Out

Recently, in a Facebook group of Peloton devotees, there was an extensive discussion about the best underwear for working out. Within an hour of someone posing this question, more than 200 people have provided their feedback on what they believed to be the best workout underwear.

In reading through this discussion–and adding my own opinions–a couple of things became clear. One, many people believe that the best underwear for working out is no underwear at all.

Two, for others who did wear underwear while exercising, it was important to them to have no show underwear. They did not want any panty lines to worry about.

And believe it or not, these no show underwear fans didn’t all wear thongs. More about their choices shortly.

And third, many worried about that fun word–moisture. Not only moisture from sweating but from other bodily fluids that tend to plague women. So, for example, during that time of the month, they found it especially challenging to find good workout underwear to wear.

Why write about the best underwear for working out

This was such an intense topic in one Facebook group of Peloton users. By the time the day was over, nearly 400 people had posted their opinions about their choices for workout underwear.

I figured that if a small group of exercisers had such strong opinions, then this was probably something that many men and women wonder about, too.

So, in this piece I’m going to share with you the different kinds of underwear that you should or should not be wearing when exercising. I’ll talk about specific brands. And, I’ll talk about the importance of the underwear fabric for moisture wicking and keeping you cool.

So, if this Facebook group was an unscientific sample of the exercise public, here would be the answer to the question, “What is the best underwear for working out?” And it would be no underwear.

Call it going commando if you’d like. But truly, many women found that going without underwear was best. This was true whether they were spinning, running or taking yoga classes.

What Peloton instructors wear while working out

Even Peloton instructors have recommended this no-underwear approach. For example, world champion cyclist and Peloton instructor Christine D’Ercole has repeatedly suggested that when wearing a padded bike short or a cycling short with a chamois padding in it, you should not be wearing underwear.

Another Peloton instructor who wears padded shorts is Matt Wilpers. While I have not heard Matt mention the underwear situation or his recommendations, others have told me that he, too, goes underwear-less when wearing his bib shorts. Those are padded shorts that are like a sleeveless bodysuit.

Avoid friction while in the saddle

Serious cyclists wear bib shorts to avoid waistbands rolling down or the shorts moving around on them while riding. When things are moving around, then you run the risk of friction.

Friction causes saddle sores. This article explains all about saddle sores.

In fact, one of the reasons that instructors like D’Ercole recommend not wearing underwear while cycling has to do with friction. That is, the more layers between you, the padded shorts and the seat, the more opportunities for things to rub the wrong way. And trust me that is a part of your body you do not want to be dealing with friction.

I address friction, padded shorts and more in this article on how to make the Peloton seat more comfortable.

The moisture factor and exercise underwear

Another biggie for skipping underwear is to avoid a build up of moisture. Many women have learned the hard way about what happens when you sit around in a wet bathing suit. Chances are soon thereafter you might have ended up with a certain kind of infection.

That’s because yeast and bacteria like warm, dark places. And guess what the inside of your underwear is, if you’re exercising for a long time? I know I’m being explicit and it may sound gross, but it’s the truth.

So, even if you do decide that the best underwear for working out is no underwear at all, don’t sit around underwear less for long periods of time after your workout. Get out of your sweaty clothes and into a shower right away.

Also, get your sweaty clothes into the laundry right away, too. When wet workout clothes sit around in a ball, they become super smelly.

And it may seem impossible to get body odor out of them. Just ask any parent who has dealt with sports equipment or uniforms that sat in a gym bag for too long.

Here is my article on how to get the sweat smell out of workout clothes.

Moisture wicking fabrics

Another way to help keep you dry, um, down there, is to choose underwear and workout clothes with moisture wicking fabrics. What constitutes a moisture-wicking fabric? One that moves moisture away from your body and to the outside of the garment itself.

Guess which fabrics are the most moisture-wicking?

• Polyester
• Nylon
• Synthetics

Even wool is moisture wicking.

Moisture-wicking fabrics are a great choice for helping you keep cool. They’re also quick dry and are ideal for athletic underwear.

So when you’re looking for the best underwear material for working out, think of synthetics like polyester and nylon. Even modal, which is a synthetic blend, can work.

Also good material for workout underwear? Bamboo. You may have seen that in sheets that keep you cool. It’s the same with bamboo underwear.

You can also find wool underwear, but it’s not itchy scratchy like you’re thinking. Brands like Smart Wool make clothing from wool that keeps you both warm and dry.

This kind of wool underwear is primarily for men’s boxer briefs. They are moisture-wicking and perfect for men to wear while exercising. But I’ll get to the best underwear for men while working out later in this blog post.

Many of the items from underwear subscription boxes are made with moisture-wicking fabrics.

Guess which fabric is the least moisture-wicking?

Cotton. So while a clean pair of cotton undies might feel nice for everyday wear, ditch cotton underwear for the gym. Cotton gets soaked and stays that way.

This article from REI does a good job of explain how different fabrics work to wick moisture away. And how these fabrics do a good job of keeping you cool and healthy during exercise. 

Finally, if you do decide to wear undies while working out, skip the kind with lace or any other decorations on them. Lace edges or the like can cause friction in places you don’t want it.

Best women’s underwear for working out

When it comes to the best women’s underwear for working out, opinions differ. As I mentioned earlier, for some people, no-show underwear or seamless underwear is the best. For others thongs are the best–I guess because they are also no show and, frankly, seamless.

And as we’ve established, for some the best women’s underwear for working out is no underwear at all. But what if you’re looking to buy exercise underwear and aren’t comfortable going commando? Well, I’ve got some answers.

I’ll break down the best women’s workout underwear based on the type of underwear. So this will be sports thongs, boy shorts, seamless, no show, thong, etc.

I’ll also include materials suggestions as mentioned above. Again, think synthetics or naturally moisture-wicking fabrics, such as bamboo and wool.

Finally, women face a special challenge during that time of the month. You don’t want to skip the gym or a Peloton class, but you may not want to have to worry about sanitary products either.

So, I’ll address period lingerie or menstrual undies or leak-proof underwear that you can wear while exercising. This also addresses a subset of women for whom stress incontinence is a real barrier to working out comfortably.

Here is my article on period lingerie.

Best seamless underwear for working out

When it comes to the best seamless underwear, let’s put no show underwear in this category, too. Many lingerie brands market seamless underwear as no show–because there are no seams to cause panty lines. It is no wonder many women prefer these while exercising.

When I’m talking about seamless, no show underwear, I’m talking regular bikini or hip huggers. I’m not talking about thongs. They have a separate section.

As far as brands that make great seamless, no show underwear that you can wear while working out, people recommend Reebok seamless hipster, Soma vanishing edge and Aerie no show, among others.

Also, Bombas now makes seamless underwear. I recently purchased some for myself. They have quickly become my favorite everyday undies as well as the ones I’ll wear to practice yoga.

Finally, don’t fall for Bombas dupes. Only buy from an approved retailer.

Best thong underwear for working out

While I’ve never been a thong wearer, I know plenty of people who are. Their biggest reason for choosing a thong? Getting that no-show look.

I mean, you don’t have to worry about panty lines when your underwear has no lines. I do get the attraction.

So it’s no surprise that women that wear thongs everyday want to wear them when exercising. And just like other kinds of underwear, you want to choose thongs made from moisture-wicking fabrics.

Because even though a thong doesn’t have a lot of material, you still want it to be quick dry and able to keep moisture away from your skin.

Exercise clothing with built in underwear

One of the ways runners get around the whole issue of what kind of underwear to wear when exercising is to wear shorts with underwear built in. Turns out even non-runners do this.

Many people doing Peloton bootcamp classes or other non-cycling classes are choosing to wear shorts with built-in underwear. Of course, if their shorts have a mesh or other kind of panty already in the shorts, they don’t wear an extra pair of underwear, too.

You can find these kinds of built-in underwear running shorts from brands like Nike and Lululemon.

If you search for this kind of short, look for the phrases “interior liner” or “integrated boy shorts” or “built-in liner” or something like that. I’ve found that the manufacturers don’t always refer to them as having built-in underwear or anything like that.

Best underwear for men working out

Hands down men find that the Smartwool performance boxer briefs are the best underwear for men while working out. They are loose enough to let everything breathe. At the same time the wool fabric is moisture wicking to keep him dry and cool.

Not try or cool enough down there, guys? Check out this product. It really can help.

You can buy Smartwool moisture-wicking men’s underwear at a variety of retailers, including Backcountry. In addition, like with women’s underwear, men should look for boxer briefs made of synthetic fabrics. You will find these from companies like Duluth Trading and Bombas.

Finally, you want to look at men’s underwear that provides the support he needs without being too tight. Again, breathability and moisture-wicking is key.

So, what is the best underwear for men to wear when working out? Boxer briefs.

Final thoughts on the best underwear for working out

When it comes to the best underwear for you to wear while working out, it’s all about preferences. You can skip underwear under bike shorts or yoga leggings or running shorts. However, if you’re not comfortable with those ideas, I think I’ve presented a wide range of options for you.

And I’ve included men in the mix. Because they deserve to know the best kind of underwear to wear when exercising, too.

If I’ve missed anything in this blog post or you have a suggestion to make, please post a comment to let me know. And if you’re a Peloton person like I am, I’m #Leah_is_Pawsome on the LB. Give me a high five if we end up in class together.