Working on Movement, Strength, and Conditioning here: 100 ft crawl and a 200 ft carry. As long as they maintain form they can increase the weight / distance. Once we up the distance and they show they own the form, we’ll back it down and can add weight, and repeat.
When fatigue sets in form will get wonky -- don’t want that. More reps of anything in any context does one thing, cements the pattern, good or bad. We’re not looking for mastery of the movement to progress. Show me competence -- “good enough” to do the next thing.
Get out and try something new today -- challenge yourself, but don’t be in a hurry master the skill -- and don’t quit because it’s not perfect. Chunk it down, practice the parts. Now layer ‘em back together. This is where / how deep or deliberate learning takes place. And have fun!