That's exactly what happened to me on the Win! It starts out as a tight feeling and it soon becomes so tight you have to stop doing any exercises. I first noticed it while i was doing the tire flip for time, and thought if I stopped that exercise it would go away. I soon started to get it when I was boxing and even while jogging! I guessed it was the "Win" so I quit taking it. A B'builder that goes to the same gym as me said that it was because the AAS loads your muscles with Glycogen or something. That's the reason for the incredible pumps, but will effect your endurance. That's a terrible problem for us!

Man I hope it ain't the Var in your case. I was really hoping i could use it to help me get close to my old weight class. I want to make a run at a National title this year and really need to drop back to 178 to be competitive at that level. You are taking a really small dose too.

Are you running any Clen, Lipo, or hydroxycut? That really dehydrates me and causes cramps.

Good luck and keep us posted.