The 14 Most Common Muscle-building Mistakes You needn't take the scenic route to swole. Clue up on these everyday training errors By Men's Health Klaus VedfeltGetty Images It's not just newbies who commonly shirk the great gym commandments – even experienced trainees are prone to foolhardy muscle-building mistakes. From questionable training techniques to sketchy recovery protocol, potential progress-stunting errors are lurking around every corner. Get acquainted with them, and you'll avoid taking the scenic route to swole. That's not to say you won't plateau from time to time. You almost certainly will. But in tackling the fundamental muscle-building mistakes laid out by