This article provides a 20-minute total core/ab workout that can be done at home without any equipment. The workout targets the abdominal muscles and helps strengthen the core.

The workout begins with the plank exercise, where the body is supported by the forearms and toes, held in a straight line. This exercise engages the core muscles and builds overall core strength. It is recommended to hold the plank for 30 seconds to start with and gradually increase the duration as strength improves.

The second exercise is the Russian twist, which involves sitting on the floor with the feet off the ground and twisting the torso from side to side.

This exercise targets the oblique muscles, helping to tone and strengthen the waistline.

The article then suggests performing bicycle crunches, which involve lying on the back, bringing the opposite elbow to touch the opposite knee while cycling the legs in a forward motion. This exercise engages the entire core, including the upper and lower abdominal muscles.

The next exercise is the leg raise, where the legs are lifted off the ground while lying on the back.

This exercise targets the lower abdominal muscles, helping to tone and tighten the lower abs.

Lastly, the article recommends finishing the workout with mountain climbers, where the body is in a push-up position and the legs are alternately brought towards the chest. This exercise helps to engage the core muscles, while also providing a cardiovascular challenge.

Overall, this 20-minute total core/ab workout is an effective way to strengthen and tone the abdominal muscles at home, without the need for any equipment.