I am 12 years old. I run on my schools track and cross country team. I am 5'7 and 117 pounds. I run a 7 minute mile. Im in decent condition. Right now it is summer time and I wanna train real hard but I need a work schedule. I wanna work on my core too because that will help with running faster and all that fun stuff. Please suggest a routine I have a bit of free time on my hands. We have a general wellness center at our high school and my coach said I could go. I haven't really lifted much before so I should start just doing push ups and stuff or not? Well please give me a work out routine show me some links to threads like this. I wanna be able to run a 6 minute mile and be able to run a 5k fairly easily at a nice pace. Thanks in advance.