Many exercisers—and fitness trainers—obsess over “strict” form during resistance training. The problem with that is disagreement over what constitutes proper form. And not everyone keeps up with the latest research. Proper squat technique, for example. Review the brief discussion at the link here for one view of the differing weight-bearing squat variations.
Stairs, for exercise, are accessible just about anywhere. Stair walking count as cardio exercise. But they also strengthen and tone our lower body, particularly calves, thighs, abs, and glutes. And who doesn’t want toned glutes? Check out this link for more details.