On the way back, it was fabulous cycling downhill all the way. It wasn’t a rugged mountain trail, just a regular road, so I wouldn’t call it mountain biking. It was more like mountain cycling, and that was good enough for us, safe and fun.
As I stated in Bodyweight Training and Stretching, in Chapter 14, we have a different perspective on being fit in Japanese natural health. Being fit means having flexible muscles and joints, not necessarily having big muscles.