i bought a bike. i weigh 135 and i'm only 5'1. i want to lose 5-10 pounds for the summer so i can feel healthier. can riding a bike help me lose some inches on my waist? i have small legs and a decent butt, but i do have fairly large breasts and big hips. but from a side view, i'm wider than i'd like to be. does biking only tone legs? because i am horrible at most exercising and bikings the only real thing that works for me. can anyone help me?