I've really got into this lately. Our town has several pieces of outdoor gym machines and a exercise trail in the local parks. I've managed to work out a 4 mile run loop stopping at each park to spend 10 mins on the cross trainers / weights / cycles. The equipment stays clean too, if the local teens are using it to sit on and drink they certainly don't leave a mess.
It's lovely in the sunshine watching the birds tweeting in the trees
. I've even been known to cancel a beloved body pump class so I can get out and make the most of a nice day.
Don't see many other people using the equipment though
.