Day 21 - Corn Cob Pull-ups

Difficulty - Advanced
Muscle Groups Addressed - Delts, Lats, Pecs, Biceps, Back

Had to throw another P90X favorite your way. The corn cob pullup is a juiced up version of the timeless classic. Before we dive in, perhaps a little basics tutorial on the multiple variations of grips you can use for a pull-up. Based on your grip, you can target multiple different muscle groups and adjust the intensity of the exercise.

Supinated (palms up) grip = Chin-up (more biceps, easier)

• Chin-up with narrow grip - 4-6 inches apart; engages forearms more
• Chin-up with neutral grip - ~12 inches apart; overloads elbows, heavy use of biceps
• Chin-up with wide grip - 12-24 inches apart; engages

Pronated (palms down) grip = Pull-up (more back, harder)

• Pull-up with narrow grip - Emphasizes lower lats and works biceps due to ineffective angle
• Pull-up with neutral grip - Overloads forearms and shoulder stabilizers, heavy use of the back
• Pull-up with wide grip - Emphasizes upper lats and upper pectorals

If you're not at the stage where you can do a full pull-up, put a chair underneath and support yourself with one or both feet.

Just make sure no matter which variation you're performing, you come all the way to the bottom and fully extend your arms. If you don't, you're not getting the most out of the exercise and you're neglecting all your synergist and dynamic stabilizer muscle groups. Also, try not to "kip", or use a jerking motion (momentum) to get yourself over the bar. Nice, slow, controlled movements will maximize the benefit of this exercise.

For corn-cobs, choose your grip and hang down with your arms fully extended. Slowly raise yourself up until your head is over the bar. Once you reach the top, in an isometric hold, shift your body to the left, then shift your body to the right, then come back to the center. Now, slowly release and lower your body down to a full hanging position. Repeat as many reps as you can. Again, the home/work version is exactly the same, you just have to find a doorframe or a pipe to hang from (careful to make sure it's not a heated pipe...)

Day 18 - Seated Glute Stretch

Difficulty - Easy
Muscle Groups Addressed - Glutes

Been sitting in that desk chair for umpteen hours and feel like your back is going to explode? Part of your problem is that your gluteal (butt) muscles are tightening and pulling on your lower back. It's all inter-connected.

This is a simple and effective way to loosen up your glutes and take some of that tension out of your lower back and improve your sitting posture.

Sit up tall, ankles below the knees, with an open chest. Cross one leg over your other thigh, as in the picture on the right. The ankle of your raised leg should be just over the knee of your planted leg. Inhale deeply.

As you exhale slowly, keeping your chest as big as possible, hang your hands down to your planted foot until you feel a stretch. You can hang here or attempt a neuro-integrated stretch. This technique has you create an isometric contraction against a resistance barrier in your stretch, helping you achieve an optimal state of neuro-flexibility and a much deeper stretch. It's much simpler than it sounds... so let's just move on.

For the neuro-integrated stretch - Take another deep breath in this hanging position and drive the knee of your raised leg towards the ground (you can use your forearm or elbow to push it down). Hold this for 5 seconds and then relax your knee. As you exhale, knee in neutral position, you should be able to dip down slightly further towards your planted foot. Do this one more time - inhale, push your knee down, dip further. This may be enough for you to get your hands to the floor. If not, don't worry, as with all stretches - it will come with time.

Don't forget to switch legs to address the other side. Back feeling any better?

Day 17 - Suspended Leg Raise

Difficulty - Moderate/Advanced
Muscle Groups Addressed - Core, Shoulders, Lats, Biceps

The first suspended/pull-up exercise! Wooooot! To those of you who would retort, "but I don't have a pull-up bar!" I say pish-posh. There's always something to hang from. A doorframe, tree branch, a tall friend's bicep. Just find something above your head and get to danglin'!


We'll start with a simple hang. With hands shoulder-width apart, just hang down from your surface of choice. Here, I'm suspended from my door frame, with my toes on the floor. For this exercise, it's fine if you toe-tap in between reps, if only to keep yourself from swinging.

Now slowly lift your feet upwards. Attempt to keep your knees locked, legs straight as you do so. Lower your legs back down to a hanging position (tap your toes to steady yourself) and then repeat. Shoot for 8-10 repetitions.

For an advanced version and to really engage your lats, pull yourself up part way, so that your biceps and forearms are locked at a 90 degree angle. Now perform the leg lift exercise the same way, but keeping your arms locked at the top. Yikes!

Day 3 - Isometric Bicep Curls

Difficulty - Easy
Muscle Groups Addressed - Biceps

Isometric exercises do not require concentric (shortening) or eccentric (lengthening) muscle movements. In other words, recall the last time you were forcefully tugging on a wine cork and it wouldn't budge... or trying to force off a stubborn lug nut while changing a car tire. These were exertions of force that did not contract your muscles either way, but instead worked them while in a static position. This makes them particularly effective in our mission for incidental wellness, because you can generate static force against any and all immovable surfaces you find out in the world.

For the gym variation, a preacher curl bench is the best way to ensure proper form. Otherwise, just stand up straight with one foot slightly in front of the other for balance. Starting at a lowered position, one arm at a time, bring a moderate weight (50%-75% of your traditional 8-repetition bicep curl -- if you don't know what your "usual" is, go find out!) up to where your bicep and forearm form a 90 degree angle. Hold this position for 30 seconds. Switch arms and repeat. Keep your upper body and legs relaxed. If you have an exercise buddy, a fun spin is to have them grab a towel, drape it from your open palm, and then apply resistance with the towel as you keep your arm locked in its isometric position.

<-- At work or at home, this exercise can be easily performed by applying upward pressure against the underside of your desk. Make sure to check for gum before you do.

--> Another fun variation involves getting a little undressed. Sit on the floor in a hamstring stretch position, with one foot tucked into the inner thigh of the other leg (shown to the right). Create a loop out of your belt and strap one end around your extended foot. Plant the elbow of your arm against your quad and pull the belt towards you, creating an isometric bicep curl. This variation is great because you'll also engage and stretch the hamstring that's providing counter-force for your curl.