Point of advisory is All Gravel is risky no matter how careful you are being. I used to go as slow as you and still do often enough but if too slow every little pebble seems to have its way with the front. Depending on surface condition there's a speed I call planing speed. A local native explained it as going fast enough so tire skips over most the jostles. I find at some speed threshold the pure ballistics carries you past the jerk jigs automatically that no human can react or even perceive the action that slaps ya down. Wes and I do it routinely but its always pensive work that feels so good once we get off of it and the beating stops.
I got caught out after dark 1/4 way up a river climb out to discover no traffic tracks fresh graded surface a few inches deep up to fist size stones off canter decreasing radius horror of instantly crashing at both ends at once plus sliding into drop off, if I put a foot down it'd just slide off the roller balls and if I stopped bike I'd never get momentum to climb instead of spin off the drop, I got insanely angery at THE Fate Hunter and went breserk as I"d crashed so much prior I just couldn't take it anymore, so this was it and I went BESERK and Shot Out of Hell into a Flying Dream State that killed the old self and released a Demon.
I'll be 60 in Nov and just today was thinking my next decade main hobby focus is travel to track days and pick show downs with the local hot shots on Ms Peel.
I no longer fear old age but reveal in its wisdom's not being wasted on a teenage body. I do know that I'll be duck taping major joints and wearing neck protector to keep the broken mush in one place to gimp around a few weeks then back at it harder from the lessons learned to the very marrow.
When I moved from big city to 50 yrs behind the times I had to pair down practice to cave man simple and cheap. Most of what though to be old age is just wear of bad posture in the neck. That grows back towards normal reserves but stretching it longer and back to recurve it over time. I don't get much but inital lightening pains on joint shattering crashes now so no longer beleave in trauma pain nor even over use muscle soreness. If ya do then you don't know what you are missing out on in real health. The other thing is if ya ain't eatting your bushelbasket of brocolli, brussell sprouts and roots and tubers, plus fish fins and egg shells and knocking open bone to suck out the raw marrow and as many grubs and bugs as ya can catch then your are desolving slowing by not enough multi minerals. Quit sweets, milk and pork then Royal Relative is a close kin.
Consider that normal gut lining is renewed every 4-5 days, blood is 3 sec to 3 months old only then filtered out, skin is only weeks old and major joints renew themselves in 7-9 months if they have good nerve blood nutrients and painless use to keep the stimulus going to renew. Oldest tissue even in 100 yr old people shouldn't be more than mid teens. If it ain't guess where the old age pathology decays most.
To lengthen thy life stretch thy neck.
To toughen thou life eat rocks.
To display superior intelligence over pure animal nature never ride on only 2 tires.