砂
This Chinese character means sand.
You can watch how to write this. - (「砂」の書き順（筆順）動画 - 漢字書き順辞典)
There are 2 main ways to read this, "すな" or "さ".
"砂時計 (すなどけい)" means hour glass.
"砂浜 (すなはま)" means sandy beach.
"砂漠 (さばく)" means desert.
"砂糖 (さとう)" means sugar.
When you are tired, you may want to eat something sweet, but be careful not to eat too much of it.
By Higashi-Mikawa Kyōjindō Shujin (東三河狂人堂主人)