energy: low

I've been using this app called Clue to track my cycle. One of the features is to track your energy which I noticed every time I have my period, it's always low.

But today, especially this evening, when my period is already over a couple of days ago, I feel like I really don't have that much energy. Is there something wrong in my diet resulting this inconvenience? I admit I drank another palm sugar milk coffee from my favorite coffee shop this morning. And I didn't eat until it was late in the afternoon. I craved sugar so much I almost ordered another glass to satisfy my needs. But I didn't, I'm glad I can still control my appetite.,

Or is it because tomorrow is Monday and I still have classes from my preparatory program and another zoom meeting from work? These last couple of weeks have been testing my strength. I had nothing much happened in July until early August. Not that much zoom meetings, work is basically slow, it was perfect. I thought I could join the program without any disturbances, oh boy I know I shouldn't had thought so. But oh well, next week is going to be the last week of the program. I need a little more of my strength to get me through the week. And then after that I have to prepare myself for the Math test. Imagine re-learning 3 years worth of almost every math lessons in just days. Whew