Only have a short window to fit in a workout today? No worries. In just 10 minutes, you can get your heart rate up and strengthen your abs with this two-for-one HIIT ab workout. Reminder: HIIT stands for high-intensity interval training, which means you'll be going all-out for specific intervals of time. These moves are all focused on your abs, making it a core and cardio workout in one.
This workout is going to work your obliques, your rectus abdominis (the six-pack muscles), and your transverse abdominis (your deep core muscles), but you'll also feel your legs and shoulders activate as you power through the mountain climbers and planks. Not to mention, you're going to be winded once it's over. If you're looking for a more slow-and-controlled-style ab workout, consider opting for these Pilates core exercises instead; this workout is designed to be fast and furious, in true HIIT fashion. Grab a towel and some water, because it's about to get sweaty!
Equipment needed: A yoga mat or soft surface, like a carpet.
Directions: Do each exercise for 30 seconds, and take 10 seconds of rest between each move. Focus on your form, but remember to challenge yourself to keep moving. (For a workout to be considered HIIT, you should feel like you're working at a high intensity.) Once you complete all five exercises, start again at the beginning; do three rounds total.
— Additional reporting by Lauren Mazzo