Laughter has many health benefits, and making you more energetic and alert is one of them. When we laugh, we breathe in oxygen-rich air, which stimulates our heart and muscles, and increases the level of endorphins in our blood. As a result, laughter gives us a true energy surge. So, next time you feel like you’re low on energy and you can’t go on with work or household chores, take a break to watch or read something funny and have a good sincere laugh.