advice - n. an opinion or suggestion about what someone should do
application - n. a formal and usually written request for something
challenge - n. a difficult task or problem or something that is hard to do
competitive - adj. having a strong desire to win or be the best at something
extreme - adj. (sports) unusual and dangerous
follow - v. to be guided by (something)
no pain, no gain - expression. If you want to improve, you must work so hard that it hurts.
parkour - n. the activity or sport of moving rapidly through an area, typically in an urban environment, negotiating obstacles by running, jumping, and climbing.
personal trainer - n. a person who teaches or coaches athletes or animals
physical - adj. relating to the body of a person instead of the mind
skilled - adj. having the training, knowledge, and experience that is needed to do something
though - adv. used when you are saying something that is different from or contrasts with a previous statement
wild - n. a wild, free, or natural place, state, or existence