Among the many disadvantages of losing momentum is the fact that it requires so much energy to regain it. When you lose momentum, for some time, you can’t get yourself to do the work, even if it’s very small. After you do decide to recreate it, you are going to have to push yourself constantly. Needless to say, not losing momentum in the first place is far more preferable to losing and then quickly recreating momentum. Sometimes it’s just our lower selves telling us to not do anything, to wait. If we persist, if we push through that, most of the time it’s as little as a couple of days. So it’s worth never missing the days. That’s why rules like “never miss twice” exists. Even if you lose momentum, make the days missed as little as possible. That way, the damage/loss won’t be as great. Think about your future self, do him/her a favor.