Sports & Fitness: Performance Training, Rules & Recovery

Elite athletic performance and general fitness are sustained through structured hypertrophy strategies, sport-specific conditioning, and rigorous adherence to injury prevention protocols.

Woman and man jogging in park

Nausea, Dizziness & Shaking After a Hard Workout

When it comes to exercise, more isn't always better. If you work out too hard, you might find yourself getting nauseated, feeling dizzy, or shaking. If you keep pushing yourself, you might even throw up. Those symptoms aren't just annoying, they can set you up for health problems.

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Runner man running on road

Does Exercising in Hot Temperatures Burn More Fat?

If your hot-weather workout makes you feel like you are burning more fat, that’s because you are. Although colder temperatures might make it seem like your body needs to work harder to warm itself, your body actually burns more energy in the heat.

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Woman's back in the fitness room.

Scapular Push-Ups

The pushup is a classic strength-training move that can be performed without weights and instead uses your own body weight as leverage to build muscle. When performed correctly, pushups help strengthen the arms, legs and core muscles.

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Isolated blackboard with periodic table, Oxygen

Is the Krebs Cycle Aerobic or Anaerobic?

The major difference between anaerobic and aerobic conditions is the requirement of oxygen. Anaerobic processes do not require oxygen while aerobic processes do require oxygen. The Krebs cycle, however, is not that simple. It is a part of a complex multi-step process called cellular respiration.

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group of women riding on exercise bike in gym

The Differences in Stationary Bike Flywheel Weights

Indoor studio biking is an intense training regimen that helps you burn a substantial number of calories per workout. A typical 40 minute workout can burn 400 to 500 calories, depending upon your body weight and intensity.

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Low angle view of a boy flexing his muscles on the beach

Can You Gain Muscle Before Puberty?

Physical appearance is important to adolescents, so it's natural for teens and pre-teens to want to start working out. Skinny beanpoles or pudgy babies who grew into pudgy kids may start having visions of building muscles to re-shape their bodies.

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Class stretching neck in row at yoga class

Neck Stretches to Remove Knots

Muscle knots can form in your neck as a result of tension or inflammation in your neck or shoulder muscles. Your neck may feel tight and difficult to move. In most cases, knots aren't a cause for major concern, though they can cause you a considerable amount of discomfort.

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Women riding bicycles by lake

Cycling Vs. Running Calories

To lose a pound of fat you'll need to burn about 3,500 calories. That may seem like a lot, but if you make cycling or running part of your routine you'll find it easier to reach this goal than you may think.

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Atlantic Ocean, May 5, 2005 - A member of the SEAL Delivery Vehicle Team prepares to launch one of the team's SEAL Delivery Vehi

Diving Equipment Used by Navy SEALs

Navy SEALs are elite members of the United States Navy Sea, Air and Land special operations force. While trained to operate above and below water, the unit is best known for its underwater capabilities. Specialized dive equipment enables the SEALs to work effectively in ocean and fresh water combat situations.

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Runners jumping over hurdles

The History of Athletics

Athletics is often used synonymously with any sporting activity, but in most cases, athletics refers primarily to track-and-field events that involve running, jumping or throwing.

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Female Crew Team Rowing

The Height & Weight of Female Rowers

The height and weight of rowers have a direct correlation on the power of their stroke. University of Copenhagen exercise scientist Niels Secher's research shows that elite rowers are tall and have lean, muscular bodies.

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Fitness club gym with sport equipment interior

Objectives of Health Clubs

Health clubs, also called fitness centers or gyms, offer various services to help members meet their fitness goals. Increasing your physical activity helps prevent cardiovascular disease and type 2 diabetes, among other common health hazards. Health clubs are an effective way to add variety to your routine.

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bicycle motor

How Does an Electric Bike Speed Controller Work?

The mechanism of an electric speed controller varies depending on whether you own an adaptive or purpose-build electric bike. An adaptive bike includes an electric drive system installed on an ordinary bicycle.

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Mother and daughter race mountain bikes

The Best Hybrid Bike Tires

Your hybrid bike has a few design features to enhance your comfort while riding, but few do as much for reducing the jarring and vibration of city riding than your tires. Tires provide absorption and traction, and hybrid bike tires excel at this with wider tread, lower tire pressures, and enhanced grip.

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People With Resistance Bands Sitting On Fitness Balls

The Best DVD for Arm Workouts

At-home workouts are an effective alternative for days you don't have the time to get to the gym or if you simply prefer to work out from the comfort of your own home.

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Young Businessman Doing Pushup At Work In Office

Do Push-Ups Flatten the Stomach?

Push-ups alone aren't exactly the fast track to six-pack abs, they may indeed contribute to a trimmer profile in direct and indirect ways.

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Get set

How to Remove Track Spikes

Track spikes have been used for decades to make the feet of competing athletes lighter while providing adequate traction. The spikes project from the sole and grip the running surface as you run. It is important to give your shoes routine maintenance, including evaluating and replacing spikes as they wear down.

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Fit blonde doing weighted lunges on the beach

What Are the Functions of Muscle Flexors & Extensors?

The human body is made up of hundreds of muscles, each classified as either skeletal, visceral or cardiac muscle tissue. Both flexors and extensors are skeletal muscles, and both have a unique function in the body relating to joint movement.

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Get your press on!

One-Arm Dumbbell Bench Presses

The single-arm dumbbell bench press is one of many variations of the bench press, and requires more shoulder and core stability than the standard press.

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