The power of 3

3's are a great rep scheme when power is being trained. This is because it is easier to keep a high power output going while keeping the reps low. Weighted power training does not lend it's self well to higher reps as staying fast and powerful will quickly end and the point of the training session will be diminished. Now we do train power endurance but that leans further towards the conditioning side of the spectrum but is no less important in all around development.

Training:
Dumbbell push press 8x3
1 arm over head squats 3x8
Farmer walks 6 100 meter trips