Application of number

When it came to the point of starting the walk cycle for my character, i had to place the key frames at roughly 10 frames apart so that the timing of each step would run smoothly, if i was to put the frames too close together then my walk would be too fast and if i put the frames too far apart the walk would be too slow.
Once i had my walk cycle i wasnt too happy with the speed of the walk so i went into the timeline and moved the key frames a bit further apart from eachother.