By popular demand, we've developed one of the most challenging workouts you'll ever do on a bicycle and created Spinervals 15.0- Have Mercy!, "The Sequel".

This brutally intense 2 hour workout is a compilation of some of the most demanding interval sets from Spinervals 8.0 through 14.0 designed specifically to make the fittest athletes suffer and beg Coach Troy to once again 'Have Mercy"!! Length: 120 Minutes. Difficulty level: 10.0.

If you want to become a faster cyclist, you need to add interval training to your workout routine. Doing intervals is like strength training on your bike. If you want to move up in the pack, decrease the time trail time, speed up the bike leg in the triathlon or simply drop your training partner and complete two Spinerval Workouts a week.

Spinervals DVD / VHS workouts are like having a personal coach in the privacy of your home. Coach Troy guides you through a complete routine from warm-up, workout and cool down. Difficulty levels are 6.5 to 9.9 on a scale of 10. The series of 23 titles will challenge any cyclist. Collect the whole set for daily variety.