Brief Answer:
do a thyroid profile and also your hemoglobin levels

Detailed Answer:
Hi XXXXXXX
Thanks for posting your query in HCM,

I have read through query, and I can understand your concern.
Low energy and stamina can be due to a couple of reasons like thyroid imbalance, anemia, low testosterone levels. Of these, low testosterone levels is a rare possibility in your case at your age.
I would recommend you to do a thyroid profile and also your hemoglobin levels.

You may also start on any multi vitamin tablets available OTC- Neurobion forte once daily for a month. Also take a balanced diet with fruits and vegetables which will boost your immunity. Also engage in outdoor activities and gym which will develop your stamina.

Hope this helps
Please feel free to discuss further for any further queries or else kindly close and rate
Regards

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