Depends on your system.
If one has a manual tick fuck system then one may be better off by leaving the desk to eat and walk around a bit. But of course you leave tons of jack on table over the course of the year.
On the other hand:
If one has an automated dialed in system whose algo can handle high and low vol environments. Then one can very take short breaks all day all long. Or depending on the algo one may be able to take day a long break.
If one has a manual tick fuck system then one may be better off by leaving the desk to eat and walk around a bit. But of course you leave tons of jack on table over the course of the year.
On the other hand:
If one has an automated dialed in system whose algo can handle high and low vol environments. Then one can very take short breaks all day all long. Or depending on the algo one may be able to take day a long break.