Yes, I know it sounds strange, but it works. As does simply jumping 10 times appr 4 times per day. Reason: a bodies mechanism that tells the body to build stronger bones are its GROWTH PLATES. They are the special bone cells located in the center of the femur (between the knee and hip joint).

When a person runs, jumps, lifts weights,..their femur "feels" the amount of stress its under. If the stress is high, frequent, intense,....your growth plates tell the bone cells to increase intake of Calcium, Phos, Vit D, Mg, and boron. The average American diet does not have enough nutrients to sustain a highly athletic person. Poor soil and highly processed foods greatly reduce nutrient content of foods also.

Suggestion:
Jump up and down with your body weight 10 times 4 times per day. (if you are heavy, do this in the pool..water waist deep. Practice proper jumping form,....believe it or not,....I bet your body forgot how to do this,..really.)

Suggestion:
Continue to take Multivitamins,...and a MULTIMINERAL,...but not at the same time. I take my vitamins with breakfast. I take a multimineral and a TRACE mineral supplement with dinner. Minerals for bones are best taken before rest /Bed. They help you sleep, eliminate restless leg syndrome, cramps, and actually build more bone structure at night. (Do you remember,...your kids growing pains at night?)

Suggestion:
Drink chocolate milk after you exercise to increase glucogen stores and nutrients. During exercise, I have a water bottle with 1/2 cup Vit D fortified Orange juice, 1/2 tsp sea salt, 1 TBsp POWDERED gatorade, 2 TBsp lemonjuice. Please pass this info to your heavy sweater friend. He your greatly benefit by also having one can of regular soup the day before he rides. Under intense exercise, the body dumps sodium in the first hour and a half. After that, the body tries to conserve it's sodium for proper heart function. Therefore the body tries to "stop" you from moving by cramping. If you truely ride hard, drink fluids the prior 2 days of the ride and have some sodium. Then have a 1/2 tsp in your waterbottle mix to replenish for my endurance/epic rides.

Good Luck, God Bless