Tweeti think gear helps heal musculature (especially deca) and connective tissues because it increases protein synthesis which speeds the healing procesess. deca is such a strong anabolic and causes water retention and increased nutrients to the joints which lubricates them. this allows more free joint movement which allows the tendons not to have to work so hard to do their job. just ole jipped's guess
good luck bro i love deca my knees feel great when i use it even with winstrol.