06/05/2026
The 12-3-30 workout was made famous by an influencer, Lauren Giraldo. It is named that because you set your treadmill at a 12% incline, set your speed at 3mph, which translates to ~4.8km/h and walk for 30 minutes.
It improves your cardiovascular health, burns calories and is low impact! Because you are walking at an incline, you really work your posterior chain as well.
Warning though, it could be intense for beginners so please modify the workout to suit yourself. One way would be to lower the incline to 6-8%. You could also shorten the duration of the workout.
Give it a go and we would love to know how you went!