Cardio isn’t for everyone (especially in this weather!), but the great thing about it is that there’s an option for every age, taste and ability. One person who works out a lot but doesn’t necessarily always enjoy it is the actress Jessica Biel.

Ben Bruno is a personal trainer who has worked with the star for over a decade. You may remember him as the man who designed the workout that helped build those back muscles in The Better Sister on Amazon Prime last year. He shared a post on Instagram with the star, detailing the short but effective cardio workout he programs when Jessica is “busy juggling work life and mum life”.

The dumbbell workout includes four exercises done without putting the weights down. “Those four moves cover the whole body and also jack your heart rate up for some cardio,” he explains. He adds that it’s a “great option for when you’re short on time and/or energy”.

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Jessica Biel’s workout routine.

Here’s how to do it:

Stand straight with your arms bent and the dumbbells at shoulder height.Lift both dumbbells above your head with arms straight.Bring a dumbbell down to your shoulder and press it back up, alternating each arm.Repeat 10 times.

Yaheetech 2x10kg Hand Dumbbells Set for Men and Women Home Fitness Lifting Training Adjustable Free Weights

Yaheetech

2x10kg Hand Dumbbells Set

Ben says Jessica starts with 10lb (4.5kg) dumbbells for the first two sets, and then moves up to 15lb (6.8kg) for the third set and 20lb (9kg) if she’s doing a fourth. If you don’t already have a set of dumbbells, picking up an adjustable set is the most space and cost-effective way to switch resistance during your workout.

quadriceps exercises. While it’s working the lower body mainly, though, you need to keep your upper body and core engaged at the same time.

Here’s how to do it:

Stand straight with the dumbbells at chest height, palms facing you.Step back on one leg and do a deep lunge, keeping the weights where they are.Bring the leg back to meet the other, and step back on the opposite side.Alternate 10 times.

NHS recommends 150 minutes of moderate intensity exercise every week, which this type of workout would feed into. Do it five times a week along with some other exercise (e.g. a Pilates workout at home), and you’ve hit your quota.