• A study by Chinese scientists showed that mice whose fathers exercised have better endurance and less lactic acid buildup.
  • The secret lies in microRNA molecules in sperm that increase with exercise and can be passed to offspring.
  • Human studies show fluctuations in sperm RNA fragments depending on exercise, smoking, diet, and stress.
  • Epigenetic changes, such as those caused by microRNAs, can adjust gene activity in offspring.
  • Sperm microRNAs can enter the fertilized egg and induce changes in embryonic development.

Sources & Links