I'll always remember my first ever injection of Sustanon. By the following day I was as stiff as hell and it took about 3 days before I was fully right. The following week I decided that I would inject in the morning before I went to work and "shake it off" as the day went on. By 5pm my Ass was so stiff I couldn't sit down or bend properly to tie my shoe laces or pick anything up. I had to literally dive into the car to get home. Getting out of the car was even more fun! However, I don't know why, but around week 3 onwards I found the injections fine. Maybe it was the Prop in the sustanon that stung like hell, or maybe I wasn't careful in injecting the needle without moving it even the slightest to the side, but those 3 weeks before it eased off weren't easy!