muscle building

Your trainer may know the best in muscle building but when it comes to your body, only you should decide. People sometimes get embarrassed to inform their trainer that they can lift only lighter than what their trainer suggests. Following your limits doesn’t make you a wimp; it means you’re wise enough to listen to your body’s capacity
Respect your body’s ability to recuperate. Do not force yourself to work out while your muscles are still sore. Doing so doesn’t result in a better physique, only injuries. As much as you’d wish to stick to your Day 1, 2 and 3 routines, schedule is only secondary to recovery