moved in I started aching and feeling

When I moved in I started aching and feeling like I needed a good stretch in the morning but I thought it was because I wasn't continuing my yoga practices through the week like the teacher told me to. Then last week my boyfriend stayed round (normally I go to him because he lives near the clubs and bar so it's easier than mine) and was so fidgety. Eventually I was like what's up? and he pointed out my mattress is awful and it hurts his back.
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super king memory foam mattresses