Firm mattresses are a good option if you prefer more support, especially if you sleep on your back or stomach. They help keep your spine aligned and can feel more stable overall.
For a lot of people, yes. A firm mattress can help support your lower back and keep your posture in check while you sleep, but comfort still comes down to personal preference.
Not necessarily. Firm doesn’t always mean uncomfortable; many firm mattresses still have cushioning layers on top to keep things comfortable while providing solid support underneath.
Firmness is a personal thing. If you sleep on your side, a softer mattress usually feels better. If you’re on your back or stomach, something medium to firm tends to give better support.