There is a new tiktok trend going on currently called 12-3-30 workout. Basically it works like this. You put the Treadmill at 12° incline and 3 mph speed and walk for 30 minutes. You will magically lose weight in few days. First I thought this is just another fad that will dissipate soon (who really remembers oo antava mama song still? Exactly). Then I remembered Matt Fitzgerald recommending walking on an incline as an effective cross training for runners. Perhaps there is some truth to this kind of workout then?
Experts, please chime in. If this method can be used as a cross training workout, what is an incline and speed that is safe and effective?