Running an average of 5x a week, an average of 3-4 miles a day, at 7.5-8.5 mph.
4-5 different core exercises, starting out with reps of 10x3, 7 days a week.
Push ups, starting out at 10-15 a day, 7 days a week.
16 years old, 5'5, 120pounds.
At the end of each week I will be adding 10 reps to...