Generally, 5-day splits are used to train a muscle group once a week. The purpose is to train a muscle group extremely hard once a week and thus al...

This will depend on the trainee. For some, training 5 days a week is too much while for others it's too little. But for most people whose goal is t...

Almost all trainees whose goal is to gain mass can benefit from using this type of training. However, the 5-day splits will probably benefit a more...