What is the point of the Nordictrack x22i and x32i incline trainers? Why do you need that much incline?

[Treadmill Review Guru]

Awesome question, it's one of the reasons these are some of our favorite machines.

[Kristen - Guru Team]

a. Good question. The x32i and x22i offer more features than a standard treadmill. Both incline to 40%, decline to -6%, and have sled push handles and a 12mph max speed. This way you can kick your heart rate up for a challenging calorie burn without having to run faster (or at all). 

b. Incline also engages more posterior muscles, so you activate your glutes, hamstrings, and gastrocnemius more than when walking on a flat road or lower incline. Incline training allows you to target more muscle groups.