A study in Norway looked at 22 men who had vasectomies to see how they felt about it. They found that all men had no sperm after 12 weeks, with half having none after just 4 weeks. Most men didn't need to take time off work, and hormone levels stayed the same. Some men had minor discomfort after the procedure, but most were happy with their choice of vasectomy as a reliable form of contraception. Some even reported an increase in sexual activity afterwards.