Epigenetics flipped the story of inheritance on its head. Your DNA isn’t a fixed destiny - it’s responsive. Lifestyle acts like a control panel, deciding which genes are turned up, turned down, or silenced altogether. And those settings don’t stop with you. They can be passed directly to your children through sperm, before conception even happens. Animal studies have shown something striking: when male mice exercised regularly before conception, their offspring had better memory, improved emotio