Do You Wear Anything Under a BJJ Rashguard

For men, the best choices to wear under a BJJ rashguard are compression vests, tank tops, tight swim trunks, or compression shorts. Wearing a rash guard alone can provide many benefits. But layering it with the right undergarment is important, especially for martial artists who engage in intense physical activities. The choice of what to wear under a rashguard depends on your comfort level, weather conditions, and the type of activity. 

What to Wear Under a Rashguard BJJ?

For men participating in martial arts or combat sports, wearing the right underlayer beneath a rash guard is essential for comfort and muscle support. Here are the top options:

Compression Tank Top

A compression tank top worn under a rash guard offers additional upper-body muscle support while allowing for a full range of motion. Its sleeveless design ensures it doesn’t interfere with shoulder movements, making it especially beneficial during grappling-heavy sports like BJJ or wrestling. It molds seamlessly under the rash guard, providing muscle endurance without restricting movements. 

Long-Sleeve Compression Top

A long-sleeve compression top provides full-arm coverage while supporting upper body and arms muscle groups. This option is ideal for colder gym environments or winter training, offering added warmth and improving muscle efficiency. BJJ practitioners often use long-sleeve tops during intense, lengthy sessions​. 

Compression Vest

Under a rash guard, the compression vest offers a streamlined fit that supports the chest and core, ensuring full mobility and comfort during intense combat training​. The sleeveless design maximizes shoulder flexibility, enabling powerful strikes and dynamic grappling without restriction. 

Compression Shorts

Compression shorts are one of the most popular choices for men in combat sports. They support muscle, reduce fatigue, and improve blood circulation during high-intensity workouts. These snug-fitting shorts help reduce friction and prevent chafing during grappling, ensuring comfort while training on the mats.

Athletic Underwear 

Wearing an athletic cup or jockstrap under a rash guard provides protection for striking-heavy sports like MMA or Muay Thai. Compression shorts with a built-in jockstrap or cup ensure groin safety without adding bulk, making them an excellent choice for combat sports involving kicks and strikes. 

Criteria Checklist for Choosing Undergarments for Your Rashguard

Here’s a checklist to help you choose the right base layer for your martial arts training:

Comfort: Ensure the fabric is smooth and non-abrasive, especially when rolling.
Mobility: Make sure it doesn’t limit your range of motion for kicking, punching, or grappling.
Hygiene: Opt for moisture-wicking and anti-microbial fabrics to reduce the risk of skin infections.
Breathability: Choose lightweight, breathable materials that allow airflow during intense training.
Fit: Tight-fitting options (like compression wear) help prevent bunching and irritation.
Durability: Ensure it can withstand constant washing and grappling wear and tear.

Considerations While Choosing What to Wear Under Rashguard

For maximum comfort and safety during your martial arts training, it’s important to avoid some common mistakes when choosing undergarments. Here are a few to keep in mind:

Wearing Cotton shirts: It absorbs moisture, which can cause discomfort and even skin irritation.
Choosing the Wrong Size: Too loose can lead to friction burns, and too tight may restrict movement.
Not Rotating Your Gear: Always have a fresh set of underwear to avoid bad odors and infections.

Final Words

Wearing the right clothing under your rash guard is about comfort and maximizing your performance in martial arts. From providing the right muscle support to protecting your skin from the harshness of training mats, layering smartly under your rash guard can be the difference between a good session and a great one. 

At Infinitude Fight, our custom rash guards for men and women are designed with performance, comfort, and style in mind. The premium material is resistant to stretching and tearing, ensuring long-lasting use. Our customized rashguards enhance muscle compression while reducing fatigue during intense training sessions.

FAQs

What to Wear Under a Rash Guard in Warm Weather?

During summer months or in warmer gym environments, the focus is on breathability and moisture control. Men and women should wear lightweight compression gear that wicks sweat and dries quickly. Avoid bulky or layered clothing, as it may trap heat and cause overheating during intense sessions.

What to Wear Under a Rash Guard in Winter?

In colder gyms, layering is key. Thin thermal compression shirts or leggings worn under a rash guard can provide an extra layer of warmth without restricting movement. These thermal layers also help keep muscles warm, reducing the risk of strains or injuries during colder training sessions​. 

What if You Wear Nothing Under a Rash Guard?

While it’s possible to wear nothing under your rash guard, it’s usually not advised in combat sports. Wearing compression gear or a sports bra underneath provides support and helps prevent skin irritation from friction, especially during grappling or striking.