Some six years ago I bought a boat that I now live on. This means that I'm in daily contact with other people around the harbour that also live on boats. These

Some six years ago I bought a boat that I now live on. This means that I'm in daily contact with other people around the harbour that also live on boats. These people are outside a lot, get a lot of exercise (if you've ever owned a boat you'll know how much physical work must be endured to keep it ship-shape), and generally don't sit much behind copmuterscreens. I've noticed that there are quite a few people that live on boats that are 70+ years old. One of my neighbours, age 69, has just come back from a 2 year solotrip from Denmark to the mediterranean and back. He sailed alone. These people are much more fit than the average 30 year old, and they're having a blast while most other people their age are sitting in a nursinghome. Anecdotally it seems like a lot of this can be traced back to the hands-on hard outdoor life that keeps you in shape all year round. So I'd say that getting out is much more important than people think. Especially if you're getting older.