Unhealthy sex life?(particularly single women)

What’s your understanding of an unhealthy sex life? I’m talking about time here. I’m not going to ask anyone for details about how long you’ve gone without (by all means feel free to give details if you wish)
This isn’t about precautions, etc. Do you think it’s unhealthy for 20-somethings to be going for long periods without any action in the budoir?
How do you feel about one night stands?