If you're accustomed to sleeping on the floor, it may not be an issue. But for someone used to sleeping in bed or on a mattress, a night or two on the floor may be okay, but it is not recommended to forgo your bed and swap to the floor instead. Sleeping on the floor can contribute to back, neck, and joint pain, and if you already suffer from mobility issues, getting down to the ground and up again can cause strain. If you suffer from allergies, regularly sleeping on the floor may also set off asthma attacks due to dust and dirt build-up being close to your mouth and nose.