Move four matchsticks to the below square to form three squares?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A man dies of old age on his 25 birthday. How is this possible?

I have branches, but no fruit, trunk or leaves. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

How can a man go eight days without sleep?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?