No worries! I found this video of the day I learned to ride in 2005 . The grass was very short and the ground beneath was hard (Dad’s lawn!). I wouldn’t recommend grass otherwise.
Most of the time I’d just fall by stepping off but this particular video shows a rather exaggerated fall.
I suspect just prior to this try I was falling by stepping off backwards, then decided to exaggerate the forward lean to see how that felt. I obviously leaned too much this time and couldn’t accelerate the wheel to keep it under me! Clearly I was running out of space anyway.
I have a couple of dozen videos like this. I perfomed tries like this two or three times per minute continuously for half an hour, had a break and did another half hour. After that, I was making it over to the flowerbed under control (probably over 100-150 tries) I went out into the road (quiet cul-de-sac). I could ride in an approximately straight line for ~50yds by the end of the day.
I was twenty and in pretty good shape having only recently joined the RN (still in the Navy… still in shape). Though not a particularly talented athlete, my youthful enthusiasm allowed me to work at extremely high intensity, jogging back to the upended bench I was using as a starting point.
This in my opinion was absolutely key to my rapid learning. The whole thing was a dance, I’d fall over into a barrel roll, spring up, jog back, wave my arms etc. Quantity not quality until your body develops enough data points to determine exactly what quality looks like. It doesn’t know yet and don’t let your brain try to convince it otherwise!
The low-res videos don’t show the blood, sweat or grass stains!
Back on topic: fitness should be viewed holistically, any studies you might find on this topic are likely to be only true under certain conditions or totally unfalsifiable pseudoscience malarky. Have fun!
