Does drinking coffee and lifting weights affect your growth?

Drinking Coffee: No. Urban legend, my friend. Caffeine may not be the best thing to be pumping into your body, but it does NOT effect your growth. Caffeine mimics hormones that are released from the adrenal gland. If caffeine mimicked somatotropin, a hormone which is responsible for growth, that would be different. But it doesn't. So no worries.

Lifting weights: Err, indirectly, weight lifting can affect your growth, but ONLY in a good way! Lifting weights not only strengthens your muscles, it also strengthens your bones by increasing bone density. I wish more young teenagers would weight train. It helps prevent osteoporosis later in life; especially in women.