Some say that children can be the best birth control. Combine a long-term marriage and some kids and most couples hit that impact point when they are wondering exactly what happened to their sex life.  Studies show, hands down, that a great sex life improves a relationship – and lack thereof can undermine it. Believe it or not, it really doesn’t take much to get your sex life back on track. Here are a few ideas to get you going in the right direction: