Which of the following is contraindicated for osteoporosis?

The presence of osteoporosis requires careful consideration of exercises to prevent fractures and ensure safety. The Hundreds, though a fundamental Pilates exercise that focuses on breathing and core engagement, involves a position that may not be suitable for those with osteoporosis. This exercise typically requires the participant to lift their head, neck, and shoulders off the mat while maintaining a stable spine, which can place undue stress on the vertebrae. In individuals with osteoporosis, this kind of movement can increase the risk of spinal compression fractures, particularly if there is any existing weakness in the bone structure.

In contrast, options like breathing exercises or more controlled movements such as leg circles, can be safer and beneficial, promoting stability without excessive strain. Boxing, while typically considered a high-impact activity, may also involve movements that are risky for those with osteoporosis, but it is more context-dependent based on how the sport is approached.

Thus, The Hundreds is specifically contraindicated due to the demanding position it requires and its potential to compromise spinal integrity in individuals with weakened bones.