Day 9 21-Day Jumpstart Fitness Challenge.

Grab your heavier dumbbells and prepare to work your glutes, hamstrings and quadriceps. Exercises in this mini-circuit style workout will also challenge your single-leg balance and strength! Have a chair nearby to use for light support and possibly, for the single-leg squats. Knee-friendly options are provided.

Tools: moderate & heavy dumbbells, chair for support