Pursuing most pastimes, especially when starting, require one to concentrate. Not to worry, it's painless

. Focusing on something you anticipate will be enjoyable will cause your operating system to (ie: brain) produce endorphins. This causes pleasure and/or enjoyment. Breaking this down further.....Your crawler is going to cause you to forget about the mortgage, the dog, your job whatever. All this stuff will be waiting for you when you head home. Your brain gets focused on the crawling and it is really taking a break. A rest. Most any pastime will cause this....and it is like a fresh lipo in your crawler, charges you up for the trails ahead.....
Yes, there are other factors, but this is the basic role of a pastime/hobby. Talent or skills that you develop will be satisfying, but have no real bearing on the enjoyment factor. Some compete, trail, build, buy or whatever. But we all crawl on the same planet. Playing with toys as a child brought pleasure but somewhere along the line we got convinced that a successful life required that we should be focusing on getting well established in life and try to ignore things that we really need to get there. Eating better, exercising for body health are crucial, but, the brain is the lipo that our lives depend on. It's ok to rest and recharge now and then. It is PART of being healthy.
Crawling frees the mind. Curiously, you may be watching someone making a difficult crawl while in reality they are watching the same thing you are. You might say the person with the transmitter isn't really there.......
Jackson Browne sang " I was flying like a bird so high above me...and when I looked down...I was standing on the ground.."
Or not....