We Americans love this phrase. For example, every time a president is elected, he (or she!) says something like: On my FIRST day as president, I will hit the ground running, (That is, he -- or she! -- will start taking important action the FIRST day. Maybe: send 100 ideas to Congress for new laws, appoint 1,000 new officials to government posts, take questions for two hours from reporters, and order that the White House be repainted.) P.S. Of course, s/ he will soon get tired of "running" and after the first year will start to walk!

To arrive already ready to perform. No time is lost in starting. To arrive & be ready to run immediately. Read the manual over the weekend, so we can hit the ground running on Monday.