Brie Larson reminded her Instagram followers to stretch while wearing the cutest onesie

Brie Larson reminded her Instagram followers to stretch while wearing the cutest onesie

While you might be tempted to sneak out of a workout class early during your cooldown or hit the trails without stretching before your run, there are big benefits to taking the time to stretch your muscles before and after your workout (i.e. reducing pain and preventing injuries). If you need a little inspiration to slow down and stretch before and after a workout, take a look at Brie Larson's latest Instagram post.

The actress is known for showing off her workouts on social media (would you expect anything less from someone who plays Captain Marvel in superhero movies?). Most recently, she took a break from sharing snaps of sled pushes and clips of gravity-defying core exercises to remind her followers to take time to stretch.

"*When hamstrings are so tight you don't want to stretch*," Larson wrote in the caption of an Instagram post shared earlier this week. The post includes four pictures of her stretching indoors. (Read more: The 6 Best Hamstring Stretches for Tight Muscles and Increased Flexibility)

First, she stretches her right quad by bending her right knee and pulling her right heel toward her right glute, holding her right foot in her right hand while balancing on her left leg. Next, Larson does a cross-body shoulder stretch, pulling her right arm across her body while her left arm holds it in place, supporting her arm just below the right elbow. Afterward, she is in a wide-legged stance, bending over her right leg with her neck lowered to touch her fingertips to the floor and stretching her right hamstring and lower back. Finally, the actress balances again on her left foot with her right foot in her right hand. This time she has her left hand behind her head and extends her right foot back, pressing the top of her foot into her hand to create a right hip flexor stretch.

While the pictures and captions are great reminders of stretching, her navy romper with a tummy cutout and corset-inspired lace-up detail can't help but steal the show. At first glance it looks like a regular old set, but upon closer inspection it's a one-piece with a totally trendy cutout in the middle.

If you're wondering where to find the celebrity-approved workout onesie, you're in luck. The brand that sells the stylish fit, Popflex Active, commented on the post and wrote: "*sigh* thanks for the (sweetest) memory 🧘." Yes, this is the activewear brand created by Cassey Ho of Blogilates fame. (Remember when Cassey Ho from Blogilates challenged Brie Larson to do 100 sit-ups in 5 minutes?)

Buy it:Popflex Active Corset Romper, $95, popflexactive.com

Made from nylon and spandex, the one-piece features removable bra padding and an adjustable tie at the waist for a custom fit. The website also claims that the leggings are knee-proof (a must!). You can purchase the one-piece on the Popflex Active website for $95, but you'll have to hurry if you want to order the activewear as some sizes are already sold out.