Clean sheets may smell better than those you’ve been sleeping on for a while, and they may be better for your health.

The National Sleep Foundation explains:

• Dirt, sweat, oil and possibly makeup can accumulate on sheets.
• Dirty sheets can lead to skin breakouts and allergy symptoms.
• Dirty sheets also can lead to fungal skin infections.
• Wash your sheets, or at least the pillowcases, weekly.
• Always wash sheets after you’ve been sick, and wash frequently if you sweat a lot.

Source: HealthDay