Emotion is never advised to be implied in gambling and where we have spent or stake values that we can not tolerate to loose so easily can be tormenting that we would feel restless.

If you ask me OP, I will say Loosing is what could trouble gamblers from having peaceful bed rest because the depression of loosing their values on chasing profits can be emotionally draining and destabilizing the good state of the heart beat to let you have peace of mind to sleep.

Winning is accompanied with excitement that I think will even make you sleep like a baby with less worries. So anyone on winning should have peaceful sleep with a good state of mind.