hi, i'm 14, i'm 5 foot 8 i have a quite slender build and i'm quite into running (mainly longer distances of up to 5 miles). however i would like to start using some weights to help me improve my fitness and strength and get better at running. so obviously i don't want to be building tons of muscle, as it'll slow me down. but which weights would you suggest i start off with? i can't afford to spend hundreds on equipment BTW, and i don't have access to a gym.
cheers
cheers