Dear Ah Ang, go home, dip yr feet in warm water, relax, then do
some floor exercise with your legs, as time goes by you will feel
better. Take up yoga, it is also good ya. U can also go jogging or
walking to build up your legs muscles.
Leg weakness are due to either you are old with rhumuetism, or lack
of exercise, or too much sex and DIY, or diabetic, high sugar
content, etc etc