If you are looking for a sentence in that paragraph to support the main idea, I think it would be "All it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. The main idea is basically that walking is a good and easy way to begin exercising, and that explains it.
4 5 2 3 1 6
(1) the time traveller explores the wells and finds a complex network of undeground tunnels.(2) the traveller encounters the sub morlocks(3) the traveller realizes people of the future belong to two different races called "eloi and morlocks."(4) the traveller finds his machine missing(5) traveller saves weena from drowning(6) the travller realizes the morlocks have his machine.
I think this is coming from the Henry Ford quote, which is "Whether you think you can, or you think you can't--you're right."
This quote basically means that what you think you can do is all in your mind and how you perceive yourself. if you think you can do something, then you'll be able to do it. If you think you can't do something, then you won't be able to, because you have already given up in your mind.
Does that make sense?
i wish i knew let me know when u find out thxs