How can I adjust the bike chain tension to ensure optimal performance and longevity of my bicycle?

To adjust the bike chain tension for optimal performance and longevity, first, loosen the rear wheel nuts. Then, move the wheel back slightly to tighten the chain. Make sure the chain has about 1/2 inch of vertical movement. Finally, tighten the rear wheel nuts securely. Check the tension periodically to maintain optimal performance and prevent wear on the chain and gears.