Hey sophia thanks for the invite, ive looked through the site and at some videos and this parkour thing seems pretty cool. im def down for trying it. I went to the barkgirls and requested to add them. Is that what you meant by signing up? see you soon,
Rollerblading, skating, skiing, snowboarding, all sports where you improve your balance and test your 'bailing' skills will definitely help you with parkour.
Maybe, just take a look at this guide to start out on the right foot.