Torch some calories with this low-impact Tabata workout. We will alternate between two exercises for each Tabata, placing a focus on your core and getting that heart rate up.

Options are given for beginners and osteoporosis.

Day 2 of the 21-Day Fit & Fierce Challenge.

Tools: a chair if you're a beginner and if you own a BOSU ball - grab that too (optional)

8 x 20sec
Prone squat
Double dead bug

8 x 20sec
Crossover shuffles
Crossover lunges

8 x 20sec
Low impact burpee
Squat & pulse

8 x 20sec
Mountain climbers
Deep lunge