Maximum Weight Loss Without Any Equipment

I am working hard at losing weight but I can’t afford to go to gym or buy equipment.
At the moment, I use my friends treadmill – but I can’t go over there all of the time because I would be using her.
I live in a village, so it is nice to go for walks but has anybody got any good suggestions that worked for them?
I specifically want to lose weight around my stomach and thighs.

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