Today we are looking at how your ability to function and shoot a handgun can be effected by stress. Shown in this video are two drills which accurately represent the physical side effects of an adrenaline dump - loss of fine motor skills and elevated heart rate.
The ice water test will cause the blood flow to leave your fingers, thereby limiting your ability to feel potentially vital pieces of the firearm such as the mag release and trigger. Also your hands will be slippery, just as sweat would leave them, making fine motor skills even more difficult.
Running and doing pushups will elevate your heart rate, breathing, and create fatigue making presentation of the firearm and maintaining necessary sight picture difficult.
If you're not pushing yourself, you're not improving yourself!