Fatigue and Heavy Lifting
When I was younger I used to train really hard. I still tend to do so. But when I was younger, I don't even remember why, but I decided that it would be important to test my ability to lift insanely heavy weights under psychological distress. To simulate that state, I did what I hate the most: I ran. I would run 1.1 miles in the windless, midnight heat of Texas (I got off work at 12am back then). I would time it so my roommate could try to beat my time next time he ran. Then I would rest for 3 minutes or 1.5 minutes depending on the day and do a 20-rep squat or warm up to a 3X3 squat. I would then do deadlift, bench, chins, and a single of clean and press for fun. I only weighed about 135 back then because I could only afford, on average, about 1300-1500 calories a day.