Counting - Boys vs Girls

So this is just like my previous game 'Donators vs Staff'

If your a girl count down 5 digits from the previous number
If your a boy count up 5 digits from the previous number

Example:
Boy: 100
Girl: 95 (down 5)
Girl: 90
Boy: 95 (up 5)

Get the point of the game?
Object of the game first team to either hit ZERO or ONE HUNDRED wins.

Starting #: 50

 

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55
Got your back kash!

 

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60

 

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This repeat of donators vs staff, doesn't make sense if anyone can just count down or up as many time as they want!
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