Is it appropriate to work as a coolie during the day and go to the gym at night?
Let it rest more, so that these muscles don't need to practice which muscle you use most during the day at night. It is important to persist, it is very easy to get hurt in this state. But you don't need to practice every day. If you feel tired, 2-3 times a week is enough for the gym, and you must not practice at night.