The psychologist in the first physical rehab place over here asked me if I meditate, to which I replied "god no, I can't get 'into' it, my brain just keeps wandering"
After a couple of chats, she said "you do know that the two things that make you the calmest and happiest are essentially meditative?"
These were riding the bike and ski touring (the walking up bit).
After some discussion, I realised she's right. Meditation is about clearing the mind (apparently) which I can't do in a yoga class or sitting looking at the view. But walking up a mountain on skis (and to a degree, skiing back down) and riding a motorbike, I don't have anything else in my head. Just the total concentration on the activity in hand.
I spose the reason for sharing this is that, whilst it may not be a solution to depression, having a sport or activity that you can 100% focus on can actually help the brain some. I know that when I started biking and then again when I started skiing, I really noticed how much calmer I was afterwards and yes, happier. Not always happy, but less sad at the least!
Not sure how much this will help anyone, but I guess if someone else gets a benefit from it, then that's cool