The sartorius originates at the ASIS and proceeds to traverse obliquely and laterally down the thigh to eventually insert at the anterior surface of the tibia, just inferomedial to the tibial tuberosity, as part of the pes anserinus. In addition to flexing the hip and knee, the sartorius aids in the abduction of the hip. It is innervated by the femoral nerve (i.e., the posterior division of L2 and L3).
Site enhancement oil, often called "santol" or "synthol" (no relation to the Synthol mouthwash brand), refers to oils injected into muscles to increase the size or change the shape. Some bodybuilders, particularly at the professional level, inject their muscles with such mixtures to mimic the appearance of developed muscle where it may otherwise be disproportionate or lagging.[54] This is known as "fluffing".[55][56] Synthol is 85% oil, 7.5% lidocaine, and 7.5% alcohol.[55] It is not restricted, and many brands are available on the Internet.[57] The use of injected oil to enhance muscle appearance is common among bodybuilders,[58][59] despite the fact that synthol can cause pulmonary embolisms, nerve damage, infections, sclerosing lipogranuloma,[60] stroke,[55] and the formation of oil-filled granulomas, cysts or ulcers in the muscle.[59][61][62] Rare cases might require surgical intervention to avoid further damage to the muscle and/or to prevent loss of life.[63]
From a standing position, balance yourself on your left leg. With your right leg straight and slightly off the floor, perform small circles (from the hip) in front, to the side, and then behind you. Aim for 3-5 circles both clockwise and counterclockwise at each angle. Your supporting leg glutes will be firing to stabilize your pelvis so be sure to stand tall and strong – no swaying.

But how do you actually know if you have weak glutes? A good way to test them is to do a single leg squat as low as you can go, says Brian Schulz, MD, an orthopedic surgeon and sports medicine specialist at Kerlan-Jobe Orthopaedic Clinic in Los Angeles, CA. “Knee flexion to 90 degrees is a good sign that the gluteal muscles are strong enough,” he says.
“Exercises such as single leg squats, regular squats, deadlifts, monster walks, side laying leg lifts, step-ups and reverse planks are some of the exercises that can strengthen the muscles," says Schulz. "You can also try a challenging lunge circuit, split squats, and deadlifts for some major toning." (And of course, if you need any further ideas, check out our roundup of the 17 best glute exercises out there.)
Your glutes serve as the main mover and power output to most of your major and accessory lifts—squat, deadlift, kettbell swings, box jumps—so the more you develop and stimulate your gluteal muscles, the more you’re able to maximize control, strength, and stability. (It doesn’t hurt that women love watching you do leg and glute work in the gym, either.)
That pump is tangible, real-time biofeedback to let you know that blood is flowing to your muscle cells, beginning a chain of events that stimulates protein synthesis. Maybe that'’s why it's easy to overlook how important good nutrition is in the mass-building equation. When you choose to eat, say, chicken instead of ice cream, there'’s no immediate muscle gratification -- no pump to keep you motivated.
Insulin is a fat storage hormone. This isn’t true and makes people fear carbs because we know carbs signal insulin. Insulin will only store carbs as fat when there is no more room in the liver and muscle for glycogen. So unless there is a spillover there is no need to be transported somewhere else. Insulin isn’t a fat hormone, it’s a sugar storing hormone unless you don’t take care of it. Fat doesn’t need insulin to be stored as fat. It can store itself there because it owns those areas. Body fat is the home for dietary fat. Also, protein spikes insulin and it’s tough to gain fat or weight when eating protein. But, high protein mixed with high carbs/high fats/high both together will outweigh the fact that protein is tough to add fat/weight. If one doesn’t realize this then they blame protein for their issues.

In today's extra-large society, we tend to focus on the admirable guys who train hard and switch up their diet to transform their bodies by losing weight. We highlight their quests to lead healthier lives every chance we get — but there's another side of the wellness scale that can be just as difficult, depending on your body's makeup: Gaining mass and muscle.


1. Are you tracking calories? Doesn't have to be religiously but one should have a general idea of where they're at if the goal is mass gain and things have stalled. I'm not talking about weighing every gram of food you put in your mouth and meticulously logging your life on MyFitnessPal. As long as you're aware (within 100-200 calories) of what's going in, you should have an idea of what to adjust.

Objective: Are you getting stronger? Increasing either weight or reps? If you're measuring individual markers on a daily basis like vertical jump, grip strength, or resting heart rate then what sort of trends are you noticing in these variables? If they're staying the same while your strength is increasing, then you're recovering well. If they're decreasing and you find yourself weaker over time then you're not recovering well.


If you’re someone who’s got a good stretching routine down, both before and after a HIIT workout, bike ride or run, odds are the discomfort you feel indicates that there are grounds for more strengthening exercises. It’s important to add that many yogis with extremely flexible hips run into overstretching injuries like hip flexor strains. But, these injuries aren’t just limited to the uber-flexible. Runners, cyclists, and Stairmaster lovers might strain these muscles due to frequent overuse. We’ll share a hip flexor workout below but, first up, some stretches.
If you're a beginner, just about any workout will be intense enough to increase protein synthesis. But if you've been lifting for a while, you'll build the most muscle quickest if you focus on the large muscle groups, like the chest, back, and legs. Add compound lifts like squats, deadlifts, pullups, bent-over rows, bench presses, dips, and military presses to your workout to work them the most efficiently.
Grade III (severe): A complete tear in your muscle that causes severe pain and swelling and you can't bear weight on that leg, making it difficult to walk. You've also lost more than 50 percent of your muscle function. These injuries are less common and may need surgery to repair the torn muscle. They can take several months or more to completely heal.

Don’t give up. One day missed is one day longer. Start now to get ahead. Don’t worry about the eyes of other people. Do you. Focus on what you want. See it before it happens. Stay consistent in your ways and everything will fall into place. Trust the process, but experiment. Love and appreciate your abilities and help others as much as possible. I believe in you.
Expert tip: To make it harder, inch yourself close to a wall so your trunk is about a foot away. Bring what would be your “planted” leg on the wall, foot flat against the surface. From here, raise your “non-working leg” up into the air, keeping your knee bent. As you raise up into the glute bridge, you’ll drive your heel against the wall, raising your hips. You can also use a bench. And like the standard bridge, you can up the ante by adding weight. 
The real problems begin, however, in poses requiring full extension (straightening) of the hip joint. These poses include backbends such as Setu Bandha Sarvangasana (Bridge Pose) and Urdhva Dhanurasana (Upward-Facing Bow Pose), where both hips are extended, and standing poses like Virabhadrasana I (Warrior Pose I) and Virabhadrasana III (Warrior Pose III), in which the legs open forward and backward (front leg hip flexed, back leg hip extended). In all these poses, tight hip flexors can cause painful compression in the lower back, a fairly common problem in backbends.

Now, if you are somebody that is more of the “do-it-yourself” type, check out our self-paced online course, the Nerd Fitness Academy. The Academy has 20+ workouts for both bodyweight or weight training, a benchmark test to determine your starting workout, HD demonstrations of every movement, boss battles so you know when you to level up your routine, meal plans, a questing system, and supportive community.


Lie on your left side and position yourself so that your bottom forearm is directly under your armpit and your legs are straight with feet stacked. Brace your core and lift your hips in the air, forming a straight line from ankles to shoulders. Next, raise your top leg, without bending your knee, a few inches into the air. Hold for 3-5 seconds, lower the leg, and repeat. Complete required reps then switch sides. 

Progression – Throughout the course of your lifting career you should consistently strive for progress both mentally and physically. Initially, you may find that you’re incessantly focused on nutrition and training but as you progress in both maturity and muscular development, you should be focused on improving the balance between lifting and your life. It’s never about having an all or nothing mindset, balance must be incorporated in all aspects but this takes times to develop and occurs with progression over time.
Grade III (severe): A complete tear in your muscle that causes severe pain and swelling and you can't bear weight on that leg, making it difficult to walk. You've also lost more than 50 percent of your muscle function. These injuries are less common and may need surgery to repair the torn muscle. They can take several months or more to completely heal.
When you don't spend enough time strengthening your butt, your other muscles can pay the price, says Metzl. See, when your butt isn't strong enough to support you during activities the way it should, you put more loading force on your hamstrings, which can injure them or other muscles, joints, and ligaments that your hamstrings come in contact with—like your calves or knees. Metzl says that when a patient comes in to see him about an injury, weak glutes are often part of the problem. 
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