Having moved to an area where bike riding is no longer treacherous, I have begun to depend on 2 wheels as opposed to 4 to get around. My bike has also become my "go to" for cardio workouts that compliment my 5K training. Such an increase in pedal pushing, however, has warranted a new core focused strength routine.
Below is a routine that I put together after my Father-in-Law also showed interest in bettering his biking body:
Prone Snow Angels - 15 reps / 2 sets
Mountain Climbers - 15 reps / 2 sets
Seated Boat - 15 reps / 2 sets
Straight Leg Raises - 15 reps / 2 sets
Plank - :30 / 2x
((Note: Attempt this routine 3x/week; Rest :15 in between each exercise; Perform this routine post ride for best lactic acid clearance; Increase by 5 reps (or :30) when routine is no longer challenging))