Buddy up! Working out with a bud boosts the fun factor. Here, trainers and besties Karena Dawn and Katrina Hodgson share a circuit perfect for partners.

Link Leg Sit-Ups 
Sit across from your partner with your legs interlocked (one set of legs will be on top and the other should be underneath, using your feet to “lock” the position). Lie on your backs. With your arms behind your head, use your abs to rotate left and right while rising up to a seated position. At the top, clap hands with your partner and twist back to start. Repeat 15 times (going both left and right).

Hip Lifts
Lay on your back with your knees bent, feet planted on the ground and arms by your side. Have your friend stand over you. Lift one leg in the air, then use your abs and arms to lift your hips and butt off the ground, while your friend applies slight pressure on your foot. Alternate legs and repeat 20 times. Switch positions.

Hip Lifts
Lay on your back with your knees bent, feet planted on the ground and arms by your side. Have your friend stand over you. Lift one leg in the air, then use your abs and arms to lift your hips and butt off the ground, while your friend applies slight pressure on your foot. Alternate legs and repeat 20 times. Switch positions.

High-Five Plank
Start in a pushup position. Tighten your abs and high five your partner, slapping opposite hands to make it a li’l more challenging. Don’t forget to breathe (it happens!) and keep your body stiff as a board. Alternate between hands and repeat 10 times. If you and your girl are way sporty, you can repeat up to 30 times for a serious ab blast. Hello, new goal.

Lean on Me Pushups
Kneel on the ground, keeping your knees about shoulder-width apart. Have your friend stand behind you and hold your ankles. Contract your abs and slowly lean forward, gently falling into a pushup position. Lower down into the pushup. Explode up, using your arms and glutes to get you back to start. Repeat 10 to 20 times and then switch positions.