Thanks for writing to health care magic.
If your blood pressure is 112/70 you need not really worry regarding that. Exhaustion after physical work could be because of various causes. It could be because of anemia
. Infact there are several causes for that and you require a complete physical examination to arrive at a diagnosis. I suggest you to consult your doctor for further investigations and examination.
Continue to ask further queries as required.
Hope this helps.
Dr Y V Siva Sankara Murty
Associate Professor of Pediatric