I really hope your default is in lbs...but 

if ($default->is_KG()){
   require Rope;
   my $exerc = Rope->new(weight=>'+5');
   $exerc->skipping until $default < 100;
}

[download]
kidding..

In reply to Re: Calculate Your Weight On Various Heavenly Bodies by Discipulus
in thread Calculate Your Weight On Various Heavenly Bodies by Ovid

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