Why does your rashguard ride up during training?

Are you in the middle of a grappling session, engaging in a scramble, defending a guard pass, or working against the cage, and your rashguard is constantly riding up?

If this situation sounds familiar, rest assured: you are not alone.

It is one of the most common problems encountered by MMA, grappling, and No-Gi Brazilian Jiu-Jitsu practitioners.

But why does this happen? And more importantly, how can you avoid it?

Why does a rashguard ride up?

Unlike a classic t-shirt, a rashguard is supposed to stay in place despite movements, twists, and wrestling phases.

When it rides up regularly, several factors may be at play.

An ill-fitting cut

The first reason is often an ill-fitting cut.

A rashguard that is too loose leaves more excess fabric. During explosive movements or position changes, this excess material can gradually ride up toward the upper body.

Conversely, a well-fitted rashguard follows your movements without creating excessive folds.

An incorrect size

Choosing the wrong size is a frequent mistake.

A model that is too large will naturally tend to move more during training.

Before every purchase, it is important to consult the manufacturer's size guide rather than choosing your usual size at random.

Movements specific to grappling

Grappling and MMA impose very specific stresses on clothing.

Guard passes, sweeps, scrambles, wrestling against the cage, or ground control: all these situations create forces that constantly pull on the fabric.

Even a good rashguard is put to the test.

The absence of a retention system

Traditional rashguards rely solely on their elasticity to stay in place.

The problem is that sweat and repeated movements gradually reduce their ability to adhere to the body.

This is why some brands now use anti-slip strips located inside the waist.

These strips help improve retention and significantly limit the garment from riding up during combat phases.

Why is it bothersome?

A rashguard that rides up is not just uncomfortable.

It can also:

• Expose the skin to mat burns.

• Create annoying folds under the body.

• Require constant readjustments.

• Decrease overall comfort during training.

Over the course of a full session, these little annoyances quickly become frustrating.

Are women more affected?

In some cases, yes.

Many so-called "unisex" rashguards actually use a men's cut simply offered in smaller sizes.

When the anatomy is not properly taken into account, the garment may have a greater tendency to move during exercise.

A cut specifically developed for women often helps improve retention and comfort.

How to keep a rashguard from riding up?

To limit this problem:

• Choose an appropriate size.

• Prioritize a fitted cut.

• Check the quality of the fabric's elasticity.

• Look for strong seams.

• Opt for a model equipped with an anti-slip strip at the waist.

These elements often make the difference during intensive training.

Conclusion

If your rashguard is constantly riding up during training, the problem does not necessarily stem from your practice.

In the majority of cases, it is a combination of the cut, the size, and the garment's retention system.

A well-designed rashguard should accompany the fighter's movements while staying in place, even during the most demanding wrestling phases.

It is a detail that seems minor on paper, but which can significantly improve comfort on the mat.

Frequently asked questions

Does a rashguard that is too big ride up more?

Yes. Excess fabric generally promotes the movement of the garment during exertion.

Is an anti-slip strip really useful?

Yes. It helps to significantly reduce the rashguard from riding up during explosive movements.

Does the problem also exist in MMA?

Yes. Scrambles, wrestling against the cage, and ground work cause the same stresses as in grappling.