Nowadays, the 33 year has packed on pounds of muscle and has gone from a skinny vampire to tackling some of the meatiest roles in Hollywood, including son of Zeus, Hercules. He's a heavy hitter who can hold his own amongst the Arnie's and Stallone's of the world in the recent Expendables 3.
To stack on the muscle, Lutz breaks down each muscle group in three different ways, cramming in fat-searing bodyweight work between sets, and is reportedly a big fan of the Paleo Diet.
Give the below upper body workout a go to experience how Kellan maintains lean mass.
Dumbbell floor press
3 sets of 20 reps
Lie with DBs held in chest-press position, elbows on the floor. Press until your arms lock out. Stay strong.
Between each set, perform 10 press-ups, then rest for 60 seconds before beginning the next set.
Barbell California press
3 sets of 15 reps
Now hit both your chest and triceps. Hold the bar over your head with a close grip. Lower it toward your neck, slide it down to your chest, then press up.
Between each set, perform 10 close-grip press-ups, then rest for 60 seconds before beginning the next set.
Swiss ball pull over
3 sets of 20 reps
Add instability for some bonus belly fat slaughter. With your upper back on the ball, let the DB travel back over your head. Return, repeat – hit the floor.
Between each set, perform 10 wide-grip press-ups, then rest for 60 seconds before beginning the next set.
Landmine press
3 sets of 15 reps
Wedge the bar into a corner and rest the other end on your shoulder. Bend your knees, then drive the bar up. Do the reps on one side before switching.
Between each set, perform 20 crunches, then rest for 60 seconds before beginning the next set.
Plate halo
3 sets of 15 reps
This will build a heaven-sent torso. With elbows bent, circle the plate around your head. After one rotation, do the same again in the opposite direction.
Between each set, perform 20 legs-up crunches, then rest for 60 seconds before beginning the next set.
Medicine ball slam
3 sets of 10 reps
Your last bit of self-sacrifice. Jump and slam the med ball into the ground. Don’t rest: the mighty are all-seeing.
Between each set, perform front plank for 30seconds, then rest for 60 seconds before beginning the next set.
A version of this article originally appeared on Men's Health UK.
