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Testosterone may be the most notorious of hormones. It conjures up thoughts of muscles and masculinity. In fact, testosterone does fuel sex drive and muscle mass, but it also regulates mood and bone strength. When a man's level falls below normal, a doctor may prescribe shots, gels, or patches. But there is some debate over who needs treatment.A slow drop in testosterone is a normal part of aging, sometimes called "andropause" or "male menopause." For many men, this doesn't cause any significant problems or symptoms. Others may notice a decline in muscle mass, depression, or less interest in sex.Low testosterone can cause visible changes in some men: Smaller, softer testicles Larger breasts Thinner muscles (happens slowly over a period of years) Loss of body hair You may think osteoporosis, or brittle bone disease, is a woman...

When you have hypothyroidism, you may not realize it at first. The symptoms come on slowly. Some of them, like fatigue, happen when you have other conditions, too. You may mistake them for signs of aging or stress. Hypothyroidism can make you feel tired and sensitive to cold. You might gain a few pounds, too. Low thyroid levels can also affect your mood and thinking. For example, you might have: Depression Memory problems Trouble thinking clearly You may have pain, stiffness, and swelling in your: Muscles Joints FaceChanges in your skin can happen, too. It can become: Cool and pale Dry and itchy Rough or scaly Yellow-looking, especially on the soles of your feet, palms, and the "laugh lines" of your face Your nails may turn brittle or grow slowly. Your hair might change, too. It could become brittle or coarse, or you could have hair loss. Sometimes you can get thinning or loss of eyebrow ha...

Metabolic conditioning, or MetCon for short, refers to exercises that increase the amount of energy stored and released by the body. While all forms of training require energy, MetCon differs in the way the energy is created in the body and how it is used up by the body for activity. Metabolic conditioning uses specific exercises to improve the efficiency of the body's immediate, intermediate, and long-term energy pathways. The human body converts the food you eat and drink into energy or ‘fuel’ through a process called metabolism. The key to this process is a chemical called adenosine triphosphate (ATP). ATP, which is responsible for fueling muscle contractions, is derived from the macronutrients (carbohydrates, fats, and sometimes proteins) found in the food you eat. The amount of ATP that your body makes and uses depends on the intensity of your physical activity. ‌‌The body uses the energy pathways to convert the macronutrients into ATP in three ways: ‌When you perform low...