I love this game so much and I wanted to share a glitch. I found that you can reset the energy to full after using the scuba dive if you back out of the game and load up again and it is also used to reset the night event. It would be nice if you fix these things. These glitches are often used on speedrun .com to create an unfair advantage for players.
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The game only saves each morning at the start of the day. What you describe is considered savescumming, which is not a glitch and most games can be "cheated" using this method. Items you get from diving will also be lost when resetting the game.
This is a singleplayer game, and I am a solo dev, implementing a method to completely eliminate savescumming is no easy task.
Speedrun com is responsible for what they consider acceptable in runs.