Welcome to HCM.
It looks to be generalized weakness due to ageing.
It usually occurs after stress,b12,
folic acid,calcium,d3 deficiency and early sign of
diabetes.
You have to go for complete body profile investigations to rule out underlying condition.Start treatment accordingly.
Otherwise start B12,folic acid,calcium,d3,minerals and other supplements.
Intramuscular injections of B12 is advisable.
Ibendronate,
risedronate will be helpful to prevent
osteoporosis.
Eat nutritious,calcium,protein rich diet.
Drink more water and energy drink.
Go for exercise,yoga regularly.