Sleeping on the left also allows much of the intestines to hang away from the very thin-walled inferior vena cava (IVC) which brings venous blood back toward the heart. Interestingly, the IVC lies against the right side of the spine, so when you lie on the left much of the viscera falls away from the IVC.
What is a 'Repurchase Agreement - Repo'. A repurchase agreement (repo) is a form of short-term borrowing for dealers in government securities. The dealer sells the government securities to investors, usually on an overnight basis, and buys them back the following day.
Fed repos are done via triparty settlement, which means that the Fed and the primary dealers use a triparty agent to manage the collateral. In a triparty repo, both parties to the repo must have cash and collateral accounts at the same triparty agent, which is by definition also a clearing bank.