Guest over a year ago I am. 15 years old. Doing pushups and pulls ups will affect my height?my height is about 170 cm. Loading... Maddie over a year ago No worries, you are still growing, you will grow about 2 more inches.! Reply Loading... rizwanyounis516348082 over a year ago In reply to Maddie on 2015-11-25 - click to read No worry you will be start growing and a human grows till 20. Reply Loading...