When you have leg freezing whilst walking instead going forward going backward to prevent a fall.
Holding both leg and slap side of both knees to release the leg freezing
Stay horizon the place where you are to release the freezing.
The reason you have leg freezing because you are under medication and it is wearing off.
It is strange why the parkinson patient does not have leg freezing problem whilst on cycling?
Is it we walking we concentrate our movement to balance ?
Is it cycling we paddle up and down with one leg after the other?