> Once you’ve reached a level of physical strength it’s easier to return to that level in the future.

If you're reading this and you're < 30 and physically weak (not overweight, but lacking muscle mass) I cannot stress enough what a year or two hitting the gym could do for your permanent strength and muscle mass.

I was ridiculously skinny and physically weak going into my 20s and I just assumed that was the way I was built. But I got into fitness in my early 20s and packed on quite a bit of muscle and it's genuinely shocking to me how much base-level muscle mass and strength I've retained now 15 years on.

I always felt one of the most demotivating things about working out was that all the effort I was putting into the gym would eventually go to waste when I stopped, but that's not true. Had I known this I'd probably have started working out much earlier and for much longer than I did.