I think you'll find that very few people do 100 appraches a week, that's a very large number, baring in mind that the aim of the approach should be to get a venue change before you get the number, thus making the final number close much more solid.
I think you'll find that anyone who does do high amounts of approaches a week is still practising, and those that are extemely good at it, are probably just doing it for fun.
I think you'll find that anyone who does do high amounts of approaches a week is still practising, and those that are extemely good at it, are probably just doing it for fun.