In an interview with the LA Times about his off season work out regiment Mike Trout confessed “In fact, since a 50-inch box jump is easy for me, I’ll hold a 25-pound dumbbell in each hand to ramp it up.” That means Trout jumping on a box as high as his elbows is no problem for him. It’s so easy he has to hold 50 pounds of weights to make it difficult. Try jumping while holding 2 gallons of milk (16 lbs) and see how high you can get.
Here is video of Mike making a 60 inch box jump during an off season.