Haven't read your book.Wait a minute! In my book:
Walking = Giving up
Turning around = Giving up
Wait a minute! In my book:
Walking = Giving up
Turning around = Giving up
Some still do.......And of course, many, many years ago, folk would tour on single speeds ........
it is cyclings biggest sin.....let your muscles burn1. When it's too steep to ride?
2. Slightly before it gets too steep to ride, so as to save your legs for other hills later on