When you exercise your abdominal muscles, you’re not doing it to have rock-hard abs hidden under a layer of fat. Some muscle-strengthening exercises are just that—muscles-strengthening—but they will not help you to lose weight. These ab exercises are designed to hit the core and help you lose body fat all at once, so you can have your cake and eat it too.

1. The Pilates Hundred

This is an excellent way to warm up your muscles and ease them into an exercise routine. This exercise starts off easy and gets increasingly difficult, preparing your abdominal muscles for what is to come. Lie faceup on your mat, legs stretched out in front of you, arms by your sides. Engaging your core muscles, slowly raise your legs until they are at a 90-degree angle, perpendicular to the ground. Raise your arms up to a 30-degree angle, and pump them up and down quickly, counting 20 pumps. After you reach 20, lower your legs by 10-15 degrees and repeat for another 20 pumps. Repeat three more times for a total of 100 pumps, each time lowering your legs by 10-15 degrees. For the last 20 pumps, your legs will be at a 30-degree angle with the ground.