This reads like awful advice
I think I injured my shoulder muscle the other day. When I raise my arm above 90 degrees it starts hurting the back part of my shoulder, just where the tricep ends and the shoulder muscle starts. Doesn't feel like joint pain so I'll just wait 7 days and try to do my programme at 80% or something. Any advice if people have tried this before would be welcome as I've never really injured my upper body before (tore the ligament between my collar bone and shoulder a few years ago, but that was when I fell while being drunk off my ass).
