I’ve been using this warm-up from Rachael @ The Fitness Gauntlet for the past week or so. It really helps loosen up my hips (which I have trouble with anyway due to my desk job and biology in general) and gets your blood flowin’!
Jog in place (45 seconds)
20 jumping jacks
20 walking lunges
15 squats
40 mountain climbers
20 hip swings on each side
20 Glute Bridges
If you want or feel the need, you can repeat this before beginning your workout!