I was 25 years old and 9.5st, never lifted a weight in my life. Got sick of being so skinny. Ended up getting some weights off a huge guy that had no use for the weights anymore, he had outgrown them and was going to the gym full time.

I get agitated if I don't do something, it doesn't have to be lifting weights, it can be a bike ride, but you have to do a long bike ride (20 miles+) to use as much energy as 10 mins of seriously heavy lifting, so I prefer the lifting! Its quicker. Also when you have people calling you a skinny weak lil f**k your whole life, there comes a point where it is the final straw! I hope to get to 180lbs/200lbs with 8% BF. Then again, we all want that...