Dear Doctor: I’ve been riding my bike a lot this past year, and my lower back hasn’t been quite right. I get a pinching pain, and sometimes my left leg gets pins and needles and feels numb. A friend I ride with wonders if it’s a slipped disc. Can you talk about what that is? Will it heal?
Dear Reader: Cycling has long been a great alternative for people who want a heart-pumping workout but prefer t…
