Remember horsing around as youngster… … chasing other kids, everyone running about the same speed? Then, one day, some of those kids started getting faster… … and nobody could catch them anymore? Their secret? A special type of “superhero” muscle ...

Want to depress your thyroid by 28.2%? Guess which of these 3 common exercise types can do exactly that: Running, spin classes or hot yoga sessions… Lifting weights, kettlebells or even just bodyweight… CrossFit or another high-intensity workout… Shockingly, every single one can slow your thyroid ...