What type of preparations should I do the day before a match

Since it is gonna be my first time I'm gym as footballer, what excersizes should I be doing ehat warm-up and cool down And what are the rules I'm the gym as a footballer.

What types of off season training should I be doing

What should I be doing the day before a match

I have the opportunity to attend high school in the morning and play soccer in the afternoon with elite girls. At night, I practice with my club. I also have two games per week. Would you replace the afternoon soccer training with working out at the gym (plyometrics, etc)?