Bravo @matt_d13 you are spot on. It’s the muscles that absorb the water. It’s great for muscles. You have stumbled on a great secret. My Radiologist okayed Creatine post stroke for me… so did a lot of other people I asked. Even therapists were converted when I introduced them to it. There’s a pub med paper with very good feedback from post-stroke survivors on Creatine. I take it myself ; you can see searching the site for it