I've been taking advantage of the early sunrise and running before my family wakes up. It takes a bit of discipline, but it's so nice to check something off the daily to-do list before 7:00 a.m. Aside from patting myself on the back while brewing my cup of Joe, early morning exercise can translate into a more productive workout. The hormone cortisol, which helps break down fat for fuel, is higher in the early morning — it rises with the sun. This boost in cortisol can add a bit of power to your morning run, helping you to run a bit further and with a bit more speed. When you're debating with yourself to run or not to run next time your alarm rings, hopefully this tidbit will get you up and running.
Since my trips to visit my family during the holidays are pretty short, it's hard for me to find a free minute to get away and work out without feeling guilty. One tip that works for me is to go for a walk or run (or even hit the gym if you have one accessible) first thing in the morning before everyone is up and ready to go. If I am running outside and everyone else is still eating breakfast and getting ready, I have no qualms about sneaking out for some much needed "me time."