All you need is dumbbells and 30 minutes for a workout that challenges your whole body with an emphasis on your abs.
Justine Zwiebel / BuzzFeed
Here's how it works:
1. Do 5 complete rounds of Circuit A, resting 60 seconds between each round.
2. Before you start Circuit B, rest for 60 seconds.
3. Do 3 rounds of Circuit B, resting 60 seconds between each round.
4. You've completed the Full-Body + Core workout!
Do 8 reverse lunges (per side):
• Keep your chest up and back straight.
• Don't let your back leg touch the floor.
• Push through the heel of your front foot to return to standing.
Lauren Zaser / BuzzFeed