When someone goes above and beyond to please or help another person, the phrase "leans over backwards" is often used to describe their actions. However, there are many synonyms that can also be used in this context, such as going the extra mile, bending over backwards, making every effort, going out of one's way, straining every nerve, doing everything possible, and leaving no stone unturned. All of these phrases express the idea that someone is putting forth a significant amount of effort to accommodate another person's needs or wishes. Ultimately, the use of these synonyms can add variety and richness to one's writing and speaking.