RIDING a bike is one of those motor skills that once you've learned how to do it you never forget. It's something about how the brain is wired.
The only help I had to start with was from my older brother promising to hold on to the seat post and keep me balanced on that first ride. Maybe there was a brief wobble and then I was off. It's a long time ago, but I still recall a feeling of elation and freedom.
There is a lot more than just balance and pedalling associated with mountain biking. It's a different skill set. A lot of riders probably pick up their technical skills over years of simply getting out and riding - and possibly some bad habits.
I once did an MTB Skills Clinics course with Gabby Malloy and James Dodds. I still apply their advice, especially body position on the bike.
I'll never forget who was the only person to crash that day. On a fast run on Creek Track, as the session was winding up, Dodzy disappeared over the bars and into the bushes. Everyone else screeched to a halt. As James emerged with a fern leave wedged in his helmet there was stunned silence. Until we saw the big grin on his face - laughter all round.