Supervised exercise versus non-supervised exercise for reducing weight in obese adults.
Nicolaï SP et al
J Sports Med Phys Fitness. 2009 Mar;49(1):85-90.
This research study looked at the effects of training with supervision/instruction (ie a qualified trainer) versus “advice”
Two groups – Group one met a trainer twice a week for 4 months (as a group).
Group two received basic [...]

Q: I hate cardio. But I also hate being fat. Do I have to do cardio to get lean?
A: No you don’t have to. But it makes the whole process a lot tougher. Nothing magical happens when doing cardiovascular exercise – it just burns calories. High intensity ‘cardio’ burns more calories than low intensity ‘cardio’. [...]

This is still one of the best motivational clips I’ve seen. Check it out:

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AC