Pushups and marine style crunches before going to work in the morning, a ~5 mile (one way) bike ride to/from the office, and don't sit around all day after work

Pushups and marine style crunches before going to work in the morning, a ~5 mile (one way) bike ride to/from the office, and don't sit around all day after work. I write software. That and Wing Chun Kung Fu classes 3x per week