Physical inactivity among teenagers was found to be the cause of having weak bones. This was the findings of a research conducted by the British Columbia University and the Vancouver Coastal Health Research Institute.

The crucial years in terms of bone development among teenagers are between 10 to 14 in girls and 12 to 16 in boys. Physical inactivity during these years may put the teenagers' bone health at risk.

The researchers studied 309 teenagers for four years. They measured the physical activity of these teenagers and too X-rays of their bones. Then, the results were compared. Findings revealed that teenagers who are physically inactive tended to have weaker bones than teenagers who are physically active, according to Science Daily.

Teenagers with weak bones can easily have fractured bones. As they grow older, they become more prone to have osteoporosis as their bones lose their mass or density.

Nowadays, physical inactivity is common among teenagers who get too absorbed in gadgets. These kids are always sitting in front of computer screen and the only physical activity is hitting the keys.

For them to have strong bones, they should engage in physical exercises that can really help increase bone mass and density. Not all physical activities can lead to stronger bones. Some of them are more effective for weight loss or for the heart. Effective exercises to strengthen bones include resistance -type of exercise such as lunges and squats using free weights. Jumping is also effective. Single-leg jump and double-leg jump are helpful in strengthening bones, according to Bel Marra Health.

Teenagers should be encouraged to spend some time away from their computers and other gadgets. Parents and other people caring for them must serve as models. Parents and children can take a stroll together of play some sports. Physical inactivity should not be allowed to rule over teenagers' lives.