Describe specific ways your friend can use frequency, intensity, time, and type to safely apply the overload principles to his workout schedule. Provide two ways per training principle.
Sunday 30-minute bike ride Monday 20 push-ups, 10 squats, and 20-minute jog Tuesday 30-minute bike ride Wednesday Rest Thursday 20 push-ups, 10 squats, 25 curl-ups, and 20-minute jog Friday 30-minute bike ride Saturday One-hour walk