If extra Syns are needed for a special occasion, that's OK too.

Flexible Syns are another way in which slimmers are put in control of their weight loss campaign. Flexible Syns empower slimmers to accept that the occasional over-indulgence doesn’t mean that they have failed. It gives them flexibility for those times when they need more than their usual Syn allowance, providing a great psychological advantage. So long as they keep counting, Flexible Syns enable slimmers to stay aware and in control and an extra fifty or a hundred Syns one day is an awful lot less damaging than what happens when they stop counting altogether.