Three examples of the second law of thermodynamics are: taking a bath, melting an ice cube and sweating in a crowded room.
The reason for this is that the second law of thermodynamics is exactly "The second law of thermodynamics says that when energy changes from one form to another form, or matter moves freely, entropy (disorder) in a closed system increases. Differences in temperature, pressure, and density tend to even out horizontally after a while." For more info visit the site I got this info from. :)
https://simple.m.wikipedia.org/wiki/Second_law_of_thermodynamics