Hi guys! I've a question for you... I spent two month performing box HS Pushups and finally reached the 5x5. But, in the last month, i started to train HeSPU negatives against wall, and completed 5x3. But, my left shoulder get injured, an acromion ache. I can't understand why... Maybe for poor tecnique? In this case, can anyone, please, tell me the right way to perform? And, what are your advices?
Really really thanks.