Spot reduction failed under MRI; diet plus strength training cut belly fat about 30%.
Targeted ab work did not shrink belly fatThirty days of cardio plus crunches moved Dennis's belly fat 0.3% and took Vicky's fat off her arms, shoulders and legs in proportion.
Diet plus lifting beat the spot reduction protocolThe same two people, in the same 30 days without cardio, lost 30% and 26.3% of their belly fat on tracked calories and weight training.
Lifting decides whether the weight lost is fatVicky's cardio-only five pounds was 60% lean mass; in phase two she gained almost three pounds of lean mass while her body fat fell four points.
Executive SummaryAI
Jeremy put two people, creative director Dennis and Vicky, through 30 days of a scientifically tested spot reduction plan followed by 30 days of regular fat loss, measuring everything by MRI rather than DEXA.
The 2023 study he copied had one group jog 45 minutes and another jog 27 minutes then train abs for the same calorie burn, and after 10 weeks with no diet changes the ab group lost around 2.5 times more belly fat.
After 375 minutes of cardio and 15 ab sessions, Dennis gained half a pound and went from 17.5% to 17% body fat with belly fat down only 0.3%, while Vicky lost five pounds of which 60% was lean mass, moving her from 31.8% to 31.5%.
In phase two, with cardio and ab training cut entirely for calorie tracking at bodyweight times 12 plus lifting, Vicky dropped to 27.5% body fat, gained almost three pounds of lean mass, and her belly fat fell on average by 30% against 3% in phase one.
Dennis lost 5 pounds and reached 14.4% body fat with belly fat down 26.3%, but his abs shrank about 16% back to their pre-training size because he trained them directly no longer, whereas beginner Vicky maintained her 15% ab growth.
Key Quote
“So, I'm testing it myself.”
— Jeremy
Key Quote
“When I look at someone, I look at their face first, and then I look at their abs.”
— Dennis
Key Quote
“So for Dennis, more muscle, but no sign that spot reduction actually worked.”