When looking forward to make changes it is often a wise practice to look back to see what has been effective for others. Whether it be building muscle, losing fat, increasing strength or improving endurance there are some tried-and true methods that have worked for generations. No, these exercises aren't exotic and often don't involve the newest shiny machine in your gym. However, they should be the foundation of any workout program.
Say your New Years goal is to build mass and strength. Nothing beats The Big 3: Bench, Deadlifts and Squats. These 3 exercises release more testosterone than any bicep curl or piece of equipment could ever hope to.