If you use Tiktok, you may well have seen videos of people walking on a treadmill at a steep incline. Many of them claim to have lost weight and improved their fitness, all thanks to the 12-3-30 workout.

If you’re thinking those are some oddly specific numbers, you’re right. The method involves walking on a treadmill that is inclined at 12%, for 30 minutes, at a speed of 3 mph. That's it. No running, no jumping, no fancy equipment. Just walking. 

Where does the 12-3-30 workout come from? Is 12-3-30 suitable for everyone? Is it really effective for weight loss? In under 3 minutes, we answer your questions!

To listen to the latest episodes, click here:

Where does Father's Day come from?

What is retinol, the miracle anti ageing skincare treatment?

What is the best time of day to take a shower?

A Bababam Originals podcast written and realised by Joseph Chance.

In partnership with upday UK.

Learn more about your ad choices. Visit megaphone.fm/adchoices