What word describes this DVD? Tortuous!! "Have Mercy" is a 2 hour compilation of the hardest intervals sets from other Spinervals DVD workouts! Remember the brutal acceleration sets?! The race simulation? The sprint sets? Well… do them one after the other and you have one of the toughest two hours you can spend on an indoor trainer!! You'll be begging Coach Troy to "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.