What if I told you your next ab workout only lasts eight minutes, and you just need one light dumbbell? This is my eight-minute secret to building strong and stable core muscles, and while you can do it at any age, it’s one of my favorite core routines for my older clients.

You’re probably wondering what the so-called “secret” is. It’s simple: time under tension. In the absence of heavy weights or gym equipment, keeping tension in your core muscles with little downtime will build stability and endurance in your midsection and help you increase workout intensity in a short time. And it’s low impact.

With four exercises, I promise you two things: your core will be on fire without stressing your spine, and you’re going to feel strong, stable and incredible afterward.

Watch: 8-minute abs wo

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