Mountain biking seems like to much work, at least going up hills.
A couple of years ago I went to visit my son, who lived in Bethel Maine, and worked summers and winters at Sunday River. He wanted me to go mountain biking with him, and I thought it would be lots of work, and said so. He told me it was easy, we ride the chair lift to the top, and then just ride down.
Clue #1. We got to the top and he said he really appreciated my coming with him, because his wife wouldn't. I asked why, and he responded that she was afraid she would get killed.
Clue #2. He suggested we take one little section (abt 1/2 mile) without using our brakes. I didn't, he did. Stopping from 50MPH in a small area (there were water (snowmaking) pipes on 3 sides) while going down hill is a real challenge.
Clue #3. When we got to the bottom, he told me I was a lot braver than he was. He would never have done the things I did. Stupidity and dumb luck got me through.
so, based on the clues I gathered, I'm never going mountain biking again.