Fr tho the hydration obsession is marketing wank you get you to buy Gatorade, fancy water, water bottles, etc. If you’re thirsty, drink water. If you are doing exercise, drink extra water. If you’re drinking alcohol, too bad, you’re getting a hangover even if you drink a shitload of water because you’re in your 30s now.
Buy 3 bicycles! 1st an electric commuter/cargo bike so you can run errands without a car. 2nd a road/hybrid bike for fun and exercise on paved paths. 3rd a mountain bike so you can enjoy more nature. (an eMTB if they’re allowed on your local trails can combine all 3 bikes if you want)