I started avoiding alcohol and soda, eating more plants, making food at home instead of fast food, sticking to a sleep schedule, limiting caffeine intake to 4 coffees a day, and most days I ride a bike instead of driving. Going on regular walks is also 10/10, would recommend, even if they're short ones: Anything is better than nothing!

So far, I am pretty healthy, though my "good" cholesterol is a little high probably because I snack too much on stuff like almonds, walnuts, pistachios, etc.

The biggest easy thing to do for me was probably cutting out soda and alcohol: I lost like 20 lbs without changing much else.

A higher effort thing that also makes a big difference is learning to cook: It saves you money, can improve your nutrition, and is an important life skill you should learn anyways! You can't out-exercise a bad diet, so you're better off just eating right.