Best HIIT workouts within 15 minutes?

[Daunzo]

What are some HIIT workouts you guys followed in the past that got results? Post them below!

[MisterBoss275]

Sprints (30 sec max sprint, 45-60 sec rest) x10

Knocked 3 minutes off my 5K time doing that 3-5 times a week for 3 weeks. No complaints lol

[Gaydow]

Sprints (30 sec max sprint, 45-60 sec rest) x10

Knocked 3 minutes off my 5K time doing that 3-5 times a week for 3 weeks. No complaints lol

This. I would finish off my workouts with 10 minutes on the treadmill. 30 sec sprints at 8.5 mph and then 3-6 mph "jog" for 45-60 seconds depending on how I optimized my rests due to energy levels.

[Gilesglenn]

Pilates for Beginners from Blogilates
The ultimate full-body workouts to torch fat and tighten up from head-to-toe.

Trainer: Blogilates

What to expect: Four intense exercises repeated non-stop for the duration of a song. Sound simple? Sure. Easy? Not quite.

[Rikkigriffith]

The Body Coach 15 Minute Fat Burning HIIT Circuit
If you want to see maximum results in minimum time then bookmark this HIIT circuit.

Trainer: The Body Coach

What to expect: This workout is made up of three different circuits: 40 seconds hard work, then rest for 20 seconds. You'll repeat each circuit five times. Good luck.