Only Got 10 Minutes? This Workout Is PT Approved

"No matter which way you look at it, 10 to 15 minutes of high intensity exercise is going to be a lot better than zero minutes," Dylan Rivier, personal trainer and founder of Built by Dylan told The Huffington Post Australia.

As far as interval timing goes, Rivier recommends Tabata training -- 20 seconds of work with 10 seconds rest.

"The good thing about Tabata is that most personal training apps will have a built-in timer setting which will alert you when to work and when to rest," Rivier said.

Another option popular with Rivier's clients is choosing one lower-body exercise, and one upper-body exercise, and doing each for 30 seconds for a three-minute round before taking a rest.

"For instance, push ups and squats. This type of approach works both your chest and arms as well as your legs while offering an active recovery between each exercise," Rivier said

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