FYI you don't just go to the UK and find a footy club, they find you son. Not saying your crap at footy or anything but you have to be pretty damned good, the UK football scene is a very competitive...
Days at school/college are just exhausting in general no matter how well you eat and sleep. Your not alone bro. A good strong black coffee helps me after a long day. If i'm still tired than thats...
I hate these guys walking around the gym chest puffed out like they are gods gift. Then you look down they have chicken thighs with 8 year olds calves. IMO your not a real man till you have barbell...