Our schedules don't always allow for a 20-minute abs workout — we get it. But for those mornings that do grant you a few extra minutes, Tone It Up [1] cofounders and trainers Karena Dawn and Katrina Scott suggest taking your standard plank up a notch with this tummy toner that targets your core and obliques. Add this plank variation [2] to your existing routine or try it alone for a quick toning session.

• Begin in a plank position with your hands below your shoulders and your core engaged.
• With control, slowly bring your right knee up toward your right elbow, squeezing your lower abs to activate the obliques, perform the move on the other side. This counts as one rep.
• Complete three sets of 10 to 15 reps.

If you're looking to refuel — but don't want to feel bloated — after working your abs, Karena and Katrina suggest adding Perfect Fit Protein [3] (or any protein) to coconut water for a lighter alternative to smoothies.