Is it bad it to leave a mac air 13 plugged in all night?

Leaving a MacBook Air plugged in all night occasionally isn't inherently bad, as modern laptops are designed to manage battery health and prevent overcharging. However, consistently keeping it plugged in can lead to reduced battery lifespan over time due to battery cycling. To maintain optimal battery health, it's advisable to unplug it once it's fully charged and to let it discharge to around 20-30% occasionally.