Now that we have unofficially kicked off summer, it’s time to pull out the tank tops, sun dresses, and swimsuits. Rather than weighing yourself to check your weight loss progress, a better marker is how well your clothes fit – especially your summer wardrobe from the year before.

When most people think about problem areas on their bodies that are more exposed during the summer, they point to their tummy, love handles, and thighs. But there is one problem area that many people forget to tone and tighten – underarm flab.

A recent study conducted by the American Council on Exercise looked into which exercises activated the tricep muscle the most on a test group of 15 healthy females, ranging in age from 20 to 24. Researchers found that the following exercises activated the tricep muscles the most:

Cable Tricep Pushdown

Stand facing a weight stack and grasp the cable handles. Lock your upper arm and push the handles down by squeezing the triceps and slowly straightening the elbow. Pause and slowly release.

Triangle Pushups

Get in plank position and place your hands together in a diamond shape of the floor by touching your thumbs and forefingers. Slowly lower your torso to the floor, then push back up to plank position.

Dumbbell Tricep Kickbacks

Bend slightly at the knees and hips while pivoting your torso forward. Hold a dumbbell with a bend in the elbow. Slowly straighten the arm up and back by squeezing the tricep. Pause and slowly bring down to the starting position.

The researchers found that bench dips were moderately effective, but they do not recommend this exercise as part of a regular routine for everyone due to the excessive force the movement puts on the shoulder joint.

To test your underarm fat levels, you don’t need a fancy fat measurement device. Simply stand in front of the mirror and flex your bicep. The tissue hanging under your arm will be your tricep muscle and fat. The more lean muscle mass you have under your arm, the less underarm flab you tend to have. To look great in a strappy tank top or at the beach in your swimsuit, try these tricep exercises to make your underarms rock hard.