For months, you’ve been putting in serious hours at the gym, eating all the right things and chugging water like there’s no tomorrow. But whether you want to pack on muscle, get 6-pack abs or squat double your own body weight, you’re just not reaching your goals as quickly as you’d like. So, what’s going on? Provided you’re following a solid plan, are being consistent and aren’t expecting results overnight, one of these surprising culprits could be to blame.