How long does the (insert yo-yo name) sleep?
This very common question is another that has no answer. One player may be able to make a specific yo-yo sleep much longer then another player through skill and practice. The current World Record holder can make any yo-yo sleep longer then I can simply because they have a more perfected throw and technique. Unless you are working towards a record, yo-yo sleep times really do not matter. Any ball-bearing yo-yo released today will sleep long enough for you to perform any trick you desire on it. Concentrate less on sleep times and more on practicing your tricks.