The commute, then the chair.
Forty minutes on the train or in traffic. Then nine hours at a desk, broken only by meetings held sitting down. Sperm production needs the testes to stay a couple of degrees cooler than the rest of the body — a job made harder by every uninterrupted hour spent seated. Studies on men in professional and managerial roles, where sedentary hours run highest, have linked this pattern to measurably reduced sperm quality.
Factor — Testicular Temperature