An efficient way to stay fit

Ran today exactly one hour, timed from door-to-door. Just had a thought how running can be such an efficient way to stay fit. It’s not like packing stuff, getting to the right place, change clothes, warm-up, do your thing, and return with the same routines. One hour workout in a gym might require two hours total. And in gym you don’t sweat full time. While in running it’s a non-stop effort from the beginning to the end. – Today ran along Länsiväylä-juoksu route with sub 4.00/km speed. Mon off, tue 6K, wed and thu 10K each.