The stair-climbing group started with four sets of step-ups on a box about 30 or 40 centimeters (about 1 or 1.3 feet) high, alternating two sets per leg, to induce muscle fatigue and build strength.

She completed the trek with clients in their 60s and said strength training is key to aging well. Exercises like rucking, planks, push-ups, and wall-sits have big benefits for longevity.

If you’re trying to lose a bit of weight and want a new way to do it, stair-climbing as a regular exercise — or just adding a few flights a day — might be for you.