Chrissy Teigen's Legs Shake While Stretching In Instagram Video

• Chrissy Teigen shared a video of herself stretching her legs.
• The model and cookbook author stretches one leg then the other, but both legs shake uncontrollably when she does so.
• Chrissy says, "Just a normal stretch," in the video.

Phew, Chrissy Teigen is dealing with another health conundrum this Friday. It all started when the model and cookbook author stretched her legs. Then, something happened that made her press record on her phone and post on Instagram stories for her followers to see.

Chrissy shared a series of videos while stretching her legs. The lighting is dim, but it's not hard to see the reason she posted them. When she raises one leg to stretch it, it shakes uncontrollably. Then, the same shaking occurs again when she switches legs and it doesn't stop. "This is what happens when I stretch," she says. "Just a normal stretch." Tbh, she doesn't seem too worried.

But, is that normal? Perhaps the shaking is brought on by the long haul flight or her over-the-top (and braless) clapback? While that's not likely, there might be a more probable explanation. When you stretch a muscle, the myotatic reflex, or stretch reflex, kicks in, per Science Direct. The muscles involuntarily contract, aka they shake.

It's not the first time Chrissy has experienced some unexplained muscle twitch. In fact, earlier this summer Chrissy shared a video of her arm twitching. The video shows a close-up view of her arm twitching along with visible cupping marks, which is one way she tried to help her arm.

She has also suffered through hives on her thigh and butt. Naturally, she offered up some choice photos of that experience as well.

Take care of yourself Chrissy, until the next unexplained symptom.

Jennifer NiedJennifer Nied is the fitness editor at Women's Health and has more than 10 years of experience in health and wellness journalism. She's always out exploring—sweat-testing exercises and gear, hiking, snowboarding, running, and more—with her husband, daughter, and dog.