Sunday dips.

So Sundays are pretty consistently dip days and once action gets moving during the week generally things go back up to some degree. I would assume that there is a valid strategy of buying on Sundays and selling on Thursday or Fridays. Week trading I guess it might be called. Does anyone do this? Obviously there's day traders, and there's holders, how many of you do this and what types of cryptos do you favor for this? For my situation at least, the amount of money I would play with is measured in hundreds, not thousands, if that matters. Gains are gains, however small.