Please forward this error screen to 67. This article is about the basic principles to train muscular strength. For strength training using free weights or weight machines, see training program children 4 years training.
This article needs more medical references for verification or relies too heavily on primary sources. Strength training is typically associated with the production of lactate, which is a limiting factor of exercise performance. Regular endurance exercise leads to adaptations in skeletal muscle which can prevent lactate levels from rising during strength training. This section needs additional citations for verification. The benefits of weight training include greater muscular strength, improved muscle tone and appearance, increased endurance and enhanced bone density.
Many people take up weight training to improve their physical attractiveness. There is evidence that a body type consisting of broad shoulders and a narrow waist, attainable through strength training, is the most physically attractive male attribute according to women participating in the research. Workouts elevate metabolism for up to 14 hours following 45-minutes of vigorous exercise. Strength training also provides functional benefits. Stronger muscles improve posture, provide better support for joints, and reduce the risk of injury from everyday activities.