In case you havent realized it yet, other than the first secret weapon these arent really ranked in order of importance. They are simply in the order I feel in the mood to share them. That said....
Secret Weapon #4: Pilates
And no I am not claiming Pilates is the miracle slimmer that will take you from a size 14 to a size 4 in 4 weeks. I like the number 4, dont you? Anyhoo, it does wonders as far as keeping you limber (i.e. less workout injuries or kinks in the neck from sleeping).
It is also a great stress reliever, which helps with the sleep area as well as the stress-based overeating. And apparently they have proved it in the lab that people with high levels of stress retain weight. Something about a creepy substance called Cortisol. This is not an educational blog so go google it for yourself.