Mistake #4: Not resting long enough in between exercises
When you perform consecutive strength training movements, back-to-back with minimal rest in between sets, that time is generally not during your pure strength program – at least not with the bigger movements, anyway. As we say around here, more isn’t better. Better is better.
Taking time to rest appropriately between exercises allows your muscles to recover almost fully so that you can perform quality reps of each exercise with the heaviest load your body can handle for the given set and rep recommendation.
For bigger compound movements that are placed at the beginning of your workout, take a longer rest. you can typically get away with 30 to 90 seconds between sets of accessory movements, especially if they are paired with other exercises.