Which exercise is contraindicated for all of the following except one?

Flutter kicks are the exercise that is not contraindicated for all of the listed options. In general, flutter kicks can be performed safely by most individuals as they primarily target the abdominal muscles, hip flexors, and lower back while promoting core stability and endurance.

This exercise involves lying on your back and lifting your legs off the ground while alternating kicks, which can be modified in intensity to suit the individual's fitness level. Unlike push-ups, sit-ups, and pull-ups, which may place strain on certain joints or require specific strength levels, flutter kicks can be more universally accessible and are often included in various fitness regimens.

In contrast, push-ups, sit-ups, and pull-ups can present challenges or risks for individuals with certain physical limitations or pre-existing injuries. They impose significant demands on upper body strength, core stability, and can potentially lead to strain if not performed with proper technique. Therefore, flutter kicks stand out as a safer option that is generally safe for a broader range of fitness levels and conditions.