This is Dr Basu, experienced Internal Medicine Specialist.
I am here to address your concerns and provide great service.
It is better to continue walking as much as possible to the point you do not get too tired.
The causes of tiredness can be due to the dehydration, potassium, magnesium, calcium deficiencies, vitamin b12 and D deficiencies, iron deficiency, thyroid gland disorder, peripheral neuropathy.
You can start taking supplements; calcium 1200 mg, vitamin D 1000 IU, vitamin B12 1000 mcg daily.
Also drink plenty of fluids, tomato and orange juice.
Please see your doctor also for clinical evaluation.
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