theaustinescorts,
I humbly disagree. I do agree that the average male loses 1 to 2% of his muscle mass each year starting in the mid-30s. We may disgree about the percentage and the age but we agree that it does occur.
I disagree that weight lifting is the only cardio a person needs to maintain weight and overall body health. The definition that I go by for aerobic exercise is to get your heart rate up to 80% of maximum and KEEP IT THERE for approximately 30 minutes minimum. The average person lifting weights cannot do that -- the heart rate spikes while lifting and returns to close to normal inbetween sets. But I do not disagree with you that weight lifting has many positive benefits.
Aerobic exercise is what strengthens the heart, lungs, and the cardiovascular system. Running, cycling, swimming, walking fast, and distance skiing are most often cited as effective aerobic exercises.
From the MayoClinic.com, these are the benefits of aerobic exercise. I might add that increased sexual stamina is a benefit of a strenuous aerobic routine.
- <LI class=doublespace>Keep excess pounds at bay. Combined with a healthy diet, aerobic exercise helps you lose weight — and keep it off. <LI class=doublespace>Increase your stamina. Aerobic exercise may make you tired in the short term. But over the long term, you'll enjoy increased stamina and reduced fatigue. <LI class=doublespace>Ward off viral illnesses. Aerobic exercise activates your immune system. This leaves you less susceptible to minor viral illnesses, such as colds and flu. <LI class=doublespace>Reduce health risks. Aerobic exercise reduces the risk of many conditions, including obesity, heart disease, high blood pressure, type 2 diabetes, stroke and certain types of cancer. Weight-bearing aerobic exercises, such as walking, reduce the risk of osteoporosis. <LI class=doublespace>Manage chronic conditions. Aerobic exercise helps lower high blood pressure and control blood sugar. If you've had a heart attack, aerobic exercise helps prevent subsequent attacks. <LI class=doublespace>Strengthen your heart. A stronger heart doesn't need to beat as fast. A stronger heart also pumps blood more efficiently, which improves blood flow to all parts of your body. <LI class=doublespace>Keep your arteries clear. Aerobic exercise boosts your high-density lipoprotein (HDL), or "good," cholesterol and lowers your low-density lipoprotein (LDL), or "bad," cholesterol. The potential result? Less buildup of plaques in your arteries. <LI class=doublespace>Boost your mood. Aerobic exercise can ease the gloominess of depression, reduce the tension associated with anxiety and promote relaxation. <LI class=doublespace>Stay active and independent as you get older. Aerobic exercise keeps your muscles strong, which can help you maintain mobility as you get older. Aerobic exercise also keeps your mind sharp. At least 30 minutes of aerobic exercise three days a week seems to reduce cognitive decline in older adults.
- Live longer. People whoparticipate in regular aerobic exercise appear to live longer than those who don't exercise regularly.