Go here, figure out your calorie needs--->
do the 5X5 program here (it explains it completely)--->
Start your cardio like this-
As long as weather permits, hit the field:
400 yard jog warm up
5X100 yard sprint, 90 seconds rest between each sprint interval
4X60 yard sprint, 80 yard semi-fast jog, 60 yard sprint, 90 sec RI
400 yard jog cool down
(Adjust to conditioning level)
Second cardio day (on tredmill)
5-minute warm-up followed by 7 sets of the following:
60 seconds at 11mph
180 seconds at 5.5 mph
(adjust to conditioning level)
Third cardio day
45 minutes at 75% of max target heart rate (220-age) on elliptical trainer, rower, tredmill...whatever.
The first, second, and third cardio days are in no particular order.
Take one day off to do nothing.