Want to burn more fat? Instead of exercising in the aerobic zone 6X/week for 30 minutes, do 3X/week for 60 minutes. Same total time exercising, but with more fat burned.
This is because you’ll mostly burn muscle-stored energy for for about the first 20 minutes, then transition to mostly fat-burning between 20 & 40 minutes. So, depending on how efficient your body is at storing energy, you might not get to majority fat-burn at all if doing just 30 minutes. Doing an hour will get you at least 20 minutes where the majority of your energy is being derived from fat.
I got this from Jeff Galloway’s Book on Running. He was an US Olympic athlete in 1972, and was way ahead of his time in designing structured programs to help people train for and complete marathons. He pioneered the walk/run/walk method for people just wanting to say they’d done a marathon, plus also had a series training plans for more ambitious runners.
comletely agree!
The goo burned off when my runs go from 30 minutes to 50-60 minutes is incredible and FAST.