For fighting fat, both resistance training and anaerobic workouts are important. Metabolic rate rises when muscle is gained which helps burn off fast. Both strength and cardio decrease body fat considerably.

ccco USA: I exercise on every fast day, as well as on NFDs. I have no problem doing that and I am never tired. My program is personal training five days a week, yoga two days a week, and power walking 7 days a week. Good luck!

Unless you are weight training for absolute strength in the low heavy rep ranges 1-3 training fasted is not a good idea. ( this is really training the nervous system to recruit more muscle fibers not making the fibers bigger)

The purpose of resistance training is to gain or at least retain muscle mass. If you train hard enough to break down muscle you need to provide proteins to rebuild the muscle. Much better results are possible by feeding the body at least 25 grams of complete protein within 2 hours of intense resistance training. The amount for best results is age dependent with those over 50 needing >40 grams.

One key point is “training hard enough to break down muscle fiber” If you are just going through the motions with light weights you are not damaging muscle fibers so being fasted doesn’t really matter.

Doing cardio fasted is not an issue as you are not breaking down muscle fibers.

The ‘eat within x minutes’ thing is yet another of those exercise-based tropes for which there is no clear evidence base:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3577439/

thats really nice post !