Constant soreness and tiredness in both thighs, present even at rest and without any exercise, points toward a few common causes: low
vitamin D, anaemia, an underactive
thyroid, or a muscle enzyme imbalance rather than ordinary exertion.
Next Steps
A basic panel covering haemoglobin,
vitamin D,
vitamin B12,
thyroid function, and creatine kinase is a reasonable starting point to look for the cause.
Health Tips
See a general physician in person if the soreness spreads, your urine turns dark, or you find it hard to climb stairs or stand up from sitting.