What happens while humans
sleep?

Many biological processes happen during sleep: The brain stores new information and gets rid of toxic waste. Nerve cells communicate and reorganize, which supports healthy brain function. The body repairs cells, restores energy, and releases molecules like hormones and proteins.

When you sleep, your body undergoes a series of changes that enable the rest that is vital to your overall health. Sleep allows the brain and body to slow down and engage in processes of recovery, promoting better physical and mental performance the next day and over the long-term.

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.