Python while loop does not work properly

I am using a while loop inside a if / else condition. For some reason under one condition the while loop does not work. The condition is shown in my code below. Under these conditions I would assume that the else condition should be utilized and the weight and the max_speed should be decreased until both while conditions are not valid anymore. What am I doing wrong?

weight = 0
max_speed = 15

if weight == 0 and max_speed <= 10:
    while weight == 0 and max_speed <= 10:
        weight=weight+1
        print(weight)
        print(max_speed)
else:
    while weight != 0 and max_speed > 10:
        weight = weight-1
        max_speed=max_speed-1
        print(weight)
        print(max_speed)