About myself: I am a high school freshman and in the past months it has dawned on me that exercise is way to important to ignore as I did for the ~8 months prior when I was struggling with anxiety issues and my grandmother dying. My dad is a Cross-Country coach for 20+ years, and his healthy lifestyle has shown me that exercise really helps with life's stresses. I began doing primarily running for normally 1.5 miles, 2 or 2.5 on a good day.
My issue is that my core and upper body strength is relatively weak, and this is one of the main issues I would like to work on this summer. The problem is, I don't know/can't find an ideal balanced routine for a high school student.
Who should I consult for a balanced fitness plan? Is this one of those things that is simple enough to be achieved by the fine people here? My dad primarily just runs, He has a bench set in the basement but I have never seen him use it once. His advice for me was that most body workouts can be accomplished with your own weight (mines ~110 lbs), and after each run he does 2 sets each of: 20 pushups, 30 situps, 20 of something where you lay down on your feet and elbows, and the take turns holding your weight on each arm (its a core workout), and 20 lunges. Is this a 'good-enough' plan for a high-academic achieving young student?
I primarily want to exercise over the summer to be ready for getting back into sports next year, as this year I didnt do any due to anxiety, and presently ive caught up with myself after counseling and time.
One of my future goals for myself is to be able to run atleast a half-marathon before I graduate.