One of my favorite all-time exercises is the Bridge or what some call the wrestler's bridge or back bridge. It's more than just working the neck, it hits you everywhere from the head to the toes. It's an exercise that builds incredible internal energy and because of the positioning, it hits greatly in the hips and groin area (where our testosterone is spotted) and gives off that energizing effect you can't seem to grasp unless you've experienced it. I'm no expert but after practicing Bridging off and on for 10 years I can tell you without a doubt it is one of the most powerful exercises for your body both internally and externally. It builds radiant energy, puts you in a euphoric state that keeps you calm and aware; it's a feeding ground for super-charged strength in your legs, torches bodyfat, a strong neck and it builds great lung power from the practiced deep breathing.
I'm not saying I have an extremely high level of testosterone but I do however have powerful energy radiating through me throughout the day and my body festers in the essence of Physical Spirituality and part of the reason is from bridging; it puts blood flow into my brain, puts me in a trance-like state of relaxation and also has me feeling more fueled up than an 18 year old at his peak. One of the main keys of this is by how I breathe; I use to be a shallow breather and still have my moments but the moment I get to bridge whether it's for the front, back, wall walking or the gymnastic bridge I learn to breathe as deeply as possible and when this happens, I get stretched more, I unlock that internal energy all the way from my toes going up and feel like i'm on steroids; full of energy and fat burning metabolism running through my veins and having that "wild" feeling in certain areas where guys just can't get enough of. Breathe deeply in the bridge and you'll feel things you wished you had long ago.
Don't practice just one variation of the bridge, learn the very best of them and when you get into doing a sequence o what's called Bridging Gymnastics, it becomes a whole new realm of super-powered strength, flexibility, agility and high levels of fat torching nothing else can touch. I dare you once you're able to; attempt that style of training. You fall back into a bridge, kick over and kick back and repeat. The most I've ever done in that sequence is about 30 reps total and I came out looking like I just ran a marathon. This can be in either the back bridge or the gymnastic bridge whatever you feel would work for you. 15 minutes of this type of training will have you spanked and down for the count but don't fret, the benefits are all worth while. I highly recommend you keep water on site and I encourage you to take cold showers because you will sweat and you will be heating up a bit. Cold water therapy enhances the fat burning process and juices you up naturally & helps with recovery big time. This type of training is not to be done everyday, do what you can up to 3 times a week, 4 at best and get plenty of rest. You think you won't gain new levels of testosterone after this type of training, find out for yourself. Even basic bridging exercises hit your body like crazy and if that's all you want to do cool, you're still making progress on beating the aging process.