Why Activewear Fit Changes with Body Shape and How to Adjust
Finding the perfect activewear fit sounds simple, but anyone who trains regularly knows that fit changes with your body. Weight fluctuations, muscle gain, fat loss, hydration levels and even hormonal changes can shift the way leggings, shorts or sports bras sit on your body. At First SQUAT, we create performance wear designed to adapt to your natural changes, but understanding the science behind fit helps you choose gear that supports you all year.
This guide explains why activewear fit changes, how your body shape affects the way clothing behaves and how to adjust for the most comfortable and flattering fit.
Visit our latest performance collections at
www.firstsquat.com
The Real Reasons Your Activewear Fit Keeps Changing
1. Muscle Growth Alters Compression
When you train consistently, your muscles grow in the glutes, thighs, chest and shoulders. This naturally increases circumference in those areas, which makes tight performance fabrics feel snug.
For example, if your quads grow from leg day, leggings that once felt perfect may start to feel tighter around the thigh. Nylon blends like the Powerlift High Rise Leggings and Squatcore Dual Shorts hug the body well and stretch with muscle growth without losing shape.
2. Fat Loss Creates Extra Space
When you start losing fat, your waist and hips reduce faster than the rest of the body. This leads to extra room in leggings or joggers, especially if the fabric has low recovery strength.
This is where high recovery fabrics like our All Day Rise Leggings and Athletica Bra shine. These adapt to smaller measurements while maintaining structure and comfort.
3. Water Retention Makes Clothes Tighter
Hydration, sodium intake and sleep all affect water retention. Even a small increase in water weight can make waistbands feel tighter.
This is why seamless fabrics with adaptive stretch, such as the Coreflow Seamless Bra and Squatmode Long Sleeve Crop Top, are ideal for everyday training.
4. Hormonal Fluctuations Affect Measurements
Women often experience bloating, chest swelling or hip expansion due to hormonal cycles. These changes can be temporary but noticeable.
Adjustable fits like the Strapflex Crossback Bra or Coreease Seamless Bra help maintain comfort through all phases.
5. Fabric Types React Differently to Your Body Shape
Not all fabrics behave the same. For example:
| Fabric Type | Fit Behavior | Best For |
| Polyester blends | Light, quick dry, firm hold | High intensity sessions |
| Nylon blends | Soft, adaptive stretch | Yoga and mobility training |
| Seamless knits | Contours to curves | Everyday comfort |
| Cotton blends | Natural softness | Warm-ups and lifestyle |
Explore high quality blends in our women’s collection:
First SQUAT Trio Set: https://firstsquat.com/products/first-squat-trio-set
Powerpair Kit: https://firstsquat.com/products/powerpair-kit
Primeflex Kit: https://firstsquat.com/products/primeflex-kit
Edge Crop Top 3.0: https://firstsquat.com/products/edge-crop-top-3-0
How to Adjust Your Activewear for the Perfect Fit
1. Choose High Stretch Fabrics
If your body measurements vary often, choose nylon based blends with strong elastane content. These fabrics adjust with your shape without feeling restrictive.
Great choices from the First SQUAT lineup include:
• Slayset Performance Kit
• PrepMode Set
• Powerhold Racer Back Bra
These offer long term flexibility, especially for athletes building muscle.
2. Select Waistbands Based on Your Body Changes
If your waist fluctuates:
• High elasticity waistband: prevents digging
• Wide waistband: distributes pressure
• V shaped waistband: ideal for bloating days
For adaptable fits, explore:
• Rushfit 3 Shorts
• First SQUAT 2 in 1 Women Shorts
• Squatcore Dual Shorts
3. Adjust Bra Support to Match Chest Changes
Chest size changes with training, hormones or fat loss. Switch between low and high impact support depending on the phase.
Recommended options:
Flexfit Sports Bra for everyday movement
Athletica Bra for medium sessions
Powerhold Racer Back Bra for high intensity workouts
4. Opt for Seamless Designs When Unsure
Seamless activewear adapts effortlessly to body curves because it has fewer restrictions. This makes it ideal for athletes who experience weekly or monthly body changes.
Explore seamless favourites:
• Squatcamo Seamless Legging
• Coreflow Seamless Bra
• Edge Crop Top 3.0
5. Reassess Your Size Every Three Months
Your training cycle changes your physique. Measure your:
• Waist
• Hips
• Bust
• Thighs
This helps you choose activewear that matches your current athletic shape rather than your old one.
Trusted Sources for Fitness Insights
To keep your training and body understanding aligned, explore trusted resources like:
• National Academy of Sports Medicine: www.nasm.org
• Stronger By Science: www.strongerbyscience.com
• Bodybuilding Forum: www.bodybuilding.com/forum
These offer in depth content on strength training, muscle growth and body composition.
The First SQUAT Fit Standard
Our mission is simple. Create activewear that moves with your body, supports your performance and makes you feel confident in every phase of your fitness journey. Whether you lift heavy, run, train or stretch, your clothing should feel like it’s made for you.
Discover your next performance upgrade at
www.firstsquat.com
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