1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

18.

Why must your body even be foam rolled, anyway?
Casey Gueren is a senior health editor for BuzzFeed News and is based in New York.
Contact Casey Gueren at casey.gueren@buzzfeed.com.
Got a confidential tip? 👉 Submit it here