Resistance machines for exercise, namely, resistance machines for improving balance, and posture, toning and strengthening the muscles (deep and superficial) of the trunk as well as the upper and lower limbs; Body-training apparatus for improving balance, and posture, toning and strengthening the muscles (deep and superficial) of the trunk as well as the upper and lower limbs, namely, portable exercise platforms; Exercise machines, namely, whole-body vibration machines