Great Exercise

Rock climbing, more commonly known as climbing is to climb a vertical surface with the help only of the arms and legs. The purpose is mainly to reach the summit. As it is played indoors or in a natural environment, the climber moves on a wall, a wall or a cliff. When done indoors, the activity is on a surface that mimics the great rock walls, with the catch. The main advantage of this technique of climbing is that it can be done throughout the year.

In nature, rock climbing is mostly on cliffs. In both situations, there are two main techniques: firstly, it is to evolve vertically with the help of climber tools. It is the artificial rock climbing. The first method is much more secure. Then there is the free climbing. The second technique is to climb along a vertical surface, only with the help catch or natural supports. Fingers and toes are more in demand than during climbing.

The Climbing

The climbing can be practiced by everyone, without distinction of sex or age. For children, however, it is recommended not to start before the age of six. In general, suitable for holding a session of rock climbing is composed of a T-shirt, comfortable pants and appropriate footwear. For the latter, it is more precisely booties, designed to catch and stick to the surface. Beyond that, a good climber must be equipped with harness, rope, carabiners, a bag or pof also magnesia, and finally a descender and a lanyard. To protect themselves from potential falls, always wear a helmet.

Rock climbing, a real asset health

This sport is to move on a vertical surface is beneficial for both body and mind. On the physical level, climbing makes steel arms and legs well tapered. These body parts are sought throughout the evolution in height, the muscles work continuously. In addition, climbing strengthens the back and the lap belt. Ongoing efforts that are working these muscles ensure balance. Finally, hands and feet, especially fingers and toes, become robust. Mentally, the sport helps to build self-confidence and above all, always go beyond its limits.

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Some exercises for the Deltoid

Everything begins with solid dumbbells for deltoids. The exercise is the sweetest to sit on a bench, legs spread to about 35 degrees and palms facing toward the body. Install a dumbbell 2 to 5 kg on each hand and begin to unfold your arms in a very slow pace so as not to injure your joints. Deltoids muscles proved to be tricky because it requires the intervention of the shoulder joints, which are quite fragile. And for the beginner or advanced, you should never overdo these joints.

The side elevation angle turn, is to stand, chest bent forward. The legs are slightly apart and your feet are straight. The back should not bend. This exercise is done with two dumbbells. Initially, put your arm in pronation, holding the dumbbells and oriented towards the ground. Then begin to slowly raise your arms to horizontal. Twelve mounted for four rounds are sufficient daily. For beginners, it is advisable to practice the military developed, to avoid offending the lumbar spine and back. It's the same for developed neck.

The anterior, Lateral and Posterior

Even dressed, broad shoulders are still very good impression. And often we see first the width of the shoulders of a person, rather than his biceps or his calves. A good reason to spend more time in the gym of our shoulders. And who says the shoulder muscles, "said deltoid muscle. The deltoid is a muscle of the shoulder. And derives its name from its triangular shape, shown by the Greek delta. The deltoid is made up of three parts or three bundles: the anterior, lateral and posterior. This muscle allows us to perform shoulder movements forwards, backwards and sideways.

The anterior deltoid, also called the clavicular bundle, binds to the lateral third of the clavicle. Lateral deltoid, or average beam is connected to the outer free part of the acromion of the scapula. The posterior deltoid meanwhile, marries the scapula to the lower edge of the spine of the scapula. Note that the width of our shoulders is not determined only by the deltoid muscles, the length of the clavicles genetics also plays an important role. In short, deltoids give width to our girdle.

The classification of drugs in 3 categories

According to their action on brain function and therefore behavior, toxic agents are classified as:

- Psychedelics, hallucinogens when he is at the origin of vision: the case of cannabis, LSD, opiates such as cocaine or opium, and alcohol

- Psychoanaleptics or psychostimulants, because they excite mental activity: cocaine and crack cocaine, amphetamines, ecstasy ...

- Psychotropic drugs that have sedative effects: benzodiazepines, neuroleptics, barbiturates ...

Whatever its effects, the use of drugs chronically or in high doses can cause serious and irreversible damage to brain structures, but also on mental health, not to mention the numerous side effects they may be responsible for short or long term. It is important to know that some drugs can cause a strong physical and psychological dependence on their first outlet. So if you do not want to fall into the trap, never start.

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Mechanisms by which drugs do they act?

Mechanisms by which drugs do they act?

The drugs act on neurotransmitters, disrupting their operation:

- Taking their place in the receivers because their structure is close. For example, morphine binds to endorphin receptors, nicotine on nicotinic acetylcholine receptors. Over time, if drug use is regular, the natural production of neurotransmitters is reduced in response to these phenomena, and the lack of physical sensation appears.

- Helping to increase production, such as cocaine, which increases the secretion of dopamine, or ecstasy for the production of dopamine and serotonin. This leads to reduced sensitivity of receptors to these products because they are quickly "saturated": the higher doses is needed to achieve the same effect.
- By blocking the receptors for some neurotransmitters, in the case of alcohol, for example

And the dopamine reward circuit

Thus, the brain areas involved have their operation modified, because the signals they receive are not the same.

The effects of the drug depend on the area of the brain involved, because it is sensitive to the neurotransmitter target and the nature of the disturbance it causes.

In particular, there is a reaction triggered by dopamine in the limbic system, which consists of brain structures that play a role in the behavior (vital functions) and various emotions, especially fun.

This reaction involves the stimulation of this system, the origin of a reward circuit that causes sensations of pleasure and well-being.

Most drugs work by increasing dopamine production: these sensations are then exacerbated by the greater stimulation of the reward system.

What is the action of drugs on the brain?

Drugs lead to a certain physical and psychological dependence, particularly the so-called hard drugs. Moreover, many adults but also teens are tempted by these experiences "extreme", which not without consequences on the brain. Explanations ...

Neurotransmitters in the brain

Communication between nerve cells, neurons, is performed using chemicals, neurotransmitters or neurotransmitter.

Thus, nerve impulses arriving to a neuron is propagated in the axon (an extension of the neuron), and causes the release of a neurotransmitter that is released in what is called the synapse, which is the area junction between two neurons.

The neurotransmitter and will bind to specific receptors on the cell membrane of the receiving neuron, which in turn will by the same mechanisms, the propagation of nerve impulses.

Neurotransmitters may be of different natures: the main consist of serotonin, dopamine and acetylcholine. Different regions of the brain, the proportion and number of receptors vary.