Simply put, glute activation is waking up your glutes. It makes the connection from your brain to your muscle and gets the muscle fired up and ready to do some work. Glute activation should be done prior to your workout, but it can also be done as an active rest between sets. And trust me when I say that doing some glute activation prior to your squats, lunges, and deadlifts will result in an excellent glute workout!

Of the three, protein will of course play the most important role in the muscle building process (like calories, it’s one our required “supplies”), although fat and carbs will still be important for other reasons which range from optimizing hormone production (e.g. testosterone, the muscle building hormone) to enhancing training performance and recovery.
Most typical bodybuilding programs have way too many sets and reps and use the wrong exercises. However, if you lower the total volume, go heavier, and use compound movements as I’ve outlined above, there is nothing wrong with a body-part split for advanced lifters. In fact, it’s often less stressful to the joints than your average upper/lower split.
Firstly, let’s establish where your glutes are and what they actually refer to! Your ‘glutes’ — or your gluteal muscles, as they are more formally known — refer to the muscles in your butt. Specifically, there are three major muscles in this area: your gluteus maximus (the main, large muscle that shapes your backside), your gluteus medius and your gluteus minimus (two smaller muscles that assist the gluteus maximus in moving your body).
Those micro-tears that are such a key factor for muscle-building need rest to rebuild themselves and grow stronger. When do they do that? When you’re asleep! “You have to rest and feed your muscles between workouts or you will tear them down and they will become weaker,” says Olson. “Over time, you run the risk of over-training, which can result in injury, and possibly even more sleep troubles.”
How to do it: Sit comfortably into the leg press machine, pressing your back against the seat and your feet firmly planted to the platform. Lift off and press, straightening your legs so your knees assume a neutral position (not straight or severely bent). Continue lowering the platform until your knees create 90° angles, then return to the neutral starting position and repeat. 
If you have blisters and other foot issues, it could be related to weak glutes. “A new blister could indicate a change in the gait of the runner, and it could be a sign of poor gait/biomechanics from glute weakness such as altered foot striker pattern,” says Bayes. (It’s worth mentioning, however, that this could also just be a sign of a sneaker problem, and you might just need to buy a better-fitting pair of shoes.)
Lie on your back with knees bent and feet flat on the floor. Lift your hips to come into a bridge position. Lift your left leg off the ground and extend it in front of you, keeping your pelvis level. Inhale as you slowly lower your hips toward the ground. Exhale as you drive your right heel into the ground and lift your hips. Do 10-12 reps. Switch sides.
Exercising can help “burn” calories to help you reach a deficit. If you ate more than you meant to, you can exercise to compensate. Exercising into a deficit is not needed if you already or can eat into a deficit. Exercising is great, but not needed. It just helps. For instance, exercising to build muscle helps because muscles demand a lot of energy, so it will feed off your body fat. The more muscles you have the more calories you burn. Usually, body fat calories. If one is lean, then they need to eat food (fats) to keep up. Like me, I don’t have much body fat for my muscles to enjoy from, so I must eat fats. I’d rather have my muscles use fats from food than fat from my body. Protein for size and strength, carbs for immediate energy, and fats for sustained energy.

Do standard/oblique crunches. Lie down on a mat and position both arms behind your head without locking the hands. Bend your knees so that your feet are flat on the ground. Pushing the small of your back into the ground, slowly roll your shoulders off the ground only a couple of inches (not to a full sitting position). Don't use your momentum to help you up; use slow, regulated movements. Repeat 3 x 20.

I’m going to cover this in detail in a bit, but for right now, just know this: it’s VERY possible (and common) to gain weight fast in the hopes of gaining muscle fast. The problem, however, is that the majority of the “weight” a person in this scenario will end up gaining will be body fat rather than muscle mass. This is something that needs to be avoided at all costs, and I’ll show you how a little later.

When it comes to building lean muscle, size bodybuilders are king. That’s their ultimate goal. Sure, Crossfit, powerlifting and all the other modalities will build muscle, but that’s not their focus. They want performance and any muscle they build is a side effect. Not so with bodybuilding where muscle size and shape are the priorities. Learning how to build muscle for the sake of building muscle has some benefits to the performance athlete. It allows for ais less injury prone. Its also a fact that bigger muscle contract harder regardless of technique or form, so it’s a good strategy to throw in some bodybuilder muscle building sessions here and there to give yourself stronger muscles to then train for performance. Build the muscle bigger, then train it to perform better.
The main work of your hip flexors is to bring your knee toward your chest and to bend at the waist. Symptoms associated with a hip flexor strain can range from mild to severe and can impact your mobility. If you don’t rest and seek treatment, your hip flexor strain symptoms could get worse. But there are many at-home activities and remedies that can help reduce hip flexor strain symptoms.
And not to drop a truth bomb but, most of us need to be doing glute exercises — and aren’t. “Lack of use is the biggest reason so many people tend to have weak glutes,” says Cassandra York, PhD, MS, RD, CSCS, best-selling fitness author and a professor at Central Connecticut State University. “We don’t walk as much as we used to. We don’t take the stairs. And when we do move, we tend to be quad dominant,” says York.
To make that motion more natural, glute-building exercises are key. Ones that require hip motion or balancing on one leg, like these from John Henwood, running coach at Mile High Run Club in New York City, are best: They fire the glutes to help you stabilize and stay upright. Do one set of 15 to 20 reps, two or three days per week, and say hello to a stronger stride.

This period also saw the rise of anabolic steroids in bodybuilding and many other sports. In bodybuilding lore, this is partly attributed to the rise of "mass monsters", beginning with Arnold Schwarzenegger, Sergio Oliva, and Lou Ferrigno in the late 1960s and early 1970s, and continuing through the 1980s with Lee Haney, the 1990s with Dorian Yates, Ronnie Coleman, and Markus Rühl, and up to the present day. Bodybuilders such as Greg Kovacs attained mass and size never seen previously but were not successful at the pro level. Others were renowned for their spectacular development of a particular body part, like Tom Platz or Paul Demayo for the leg muscles. At the time of shooting Pumping Iron, Schwarzenegger (while never admitting to steroid use until long after his retirement) said that "you have to do anything you can to get the advantage in competition".[citation needed] He would later say that he does not regret using anything.[8]
This exercise is challenging and will certainly be beneficial even without weights. If you can execute perfect form with your body weight, you can make the exercise harder by adding weights to your hands, by stepping on an unstable surface with your front foot (balance disc, foam pad), or you can place your rear leg on an unstable surface such as a physioball. You should be able to comfortably perform 2-3 sets of 10 reps on each leg before advancing this exercise.