Can I heal before moving to the next zone?

[The Mushroom King]

Before moving to the next zone there is a blue marker on the ground. On the mini-map it shows up as a heart, so maybe it can be used to heal? If so, how do I use it?

[bdelgado]

GPT said it's, unfortunately, just a marker.

[931numbers]

The blue marker indicates that the exit teleport is active. It doesn't heal you, but it does let you quickly return to the exit from anywhere.