Walking

Walking, also known as ambulation, is one of the main ways that animals with legs move around. It is usually slower than running and involves the body balancing over stiff legs with each step. This way of moving works for many creatures, even those with many legs, like insects. In humans, walking might help reduce the risk of some diseases and living longer.

In places like the United Kingdom and the Republic of Ireland, the word "walking" can also mean hiking. In cities around the world, a short trip on foot is simply called a walk.

Difference from running

Main article: Running

See also: Jogging

Walking and running are different ways that people and animals move. When we walk, only one foot leaves the ground at a time, and for a moment, both feet touch the ground. Running is different because both feet leave the ground at the same time with each step.

Walking is usually slower than running. The average person walks about 5 kilometers per hour, which is around 3 miles per hour. Children usually start walking on their own around 11 months old.

Origins

It is believed that walking began underwater with fish that could move along the sea floor. Over time, this ability helped animals live on land. Many different creatures, like insects and spiders, also learned to walk on their own.

Among human ancestors, walking on two legs was one of the first important changes. Evidence from Kenya shows that early humans may have walked like we do today as long as 3 million years ago. Human walking is special because it uses less energy than walking on all fours, like some other primates do. This energy savings helped early humans travel better and survive.

Variants

Walking can be done in many different ways, each with its own special style.

• Scrambling is a way to climb hills or mountains using both hands because the ground is very steep. It’s a slower, careful kind of walking and sometimes includes a bit of rock climbing.
• Snow shoeing means walking on snow using special shoes called snowshoes. These shoes spread your weight out so you don’t sink into the snow. To snowshoe well, you need to slide your feet instead of taking big steps.
• Cross-country skiing was created as a way to travel through deep snow, just like snowshoes. Many trails used for hiking in summer can be skied in winter.
• Beach walking is a sport where people walk on sand at the beach. It can be done on firm sand or soft sand, and there are even competitions and records for walking long distances on soft sand.
• Nordic walking is a fun activity where you walk using special poles, like ski poles. Using these poles makes you use more muscles and gives you a better workout than normal walking.
• Pedestrianism was a popular sport in the past where people tried to walk very long distances. This later evolved into racewalking.
• Speed walking is just fast walking. There are different types, like power walking.
• Power walking is walking at a fast speed, usually between 7 to 9 kilometers per hour. You must always have one foot touching the ground, unlike jogging or running.
• Racewalking is a long-distance race where you must keep one foot touching the ground at all times, just like running but with smaller steps.
• Afghan walking is a way of walking while breathing in a special rhythm. It was developed in the 1980s after someone watched Afghan caravaners who could walk over 60 kilometers in a single day.
• Backward walking is walking facing backwards. It helps improve balance, coordination, and leg strength.
• Walking meditation is a type of meditation done while walking, common in Buddhism.

Biomechanics

Human walking uses a strategy called the double pendulum. When we walk, one leg swings forward from the hip, then touches the ground with the heel and rolls to the toe, acting like an inverted pendulum. The legs work together so that one foot is always touching the ground. Muscles in the calf lift the body’s center, storing potential energy. Then gravity pulls the body forward, changing that stored energy into kinetic energy. This helps walking save about 65 percent of the energy used.

Walking is different from running in a few ways. When walking, one leg always stays on the ground while the other swings. In running, there is usually a moment where both feet leave the ground. In walking, the body moves over the leg on the ground, raising the center of the body higher and then lower. In running, the body’s center is lowest when the leg is straight up. This is because landing in running stores energy in muscles and tendons. There is a maximum speed for walking before a person would lift off the ground, but usually, people start running earlier because it uses energy more efficiently.

Leisure activity

Many people enjoy walking as a fun way to stay active and explore nature. Walking can be a simple and relaxing activity, allowing individuals to enjoy the outdoors and get some exercise. There are many different types of walking, such as hiking, walking on beaches, and walking in hills or forests. Some people even walk indoors on special machines called treadmills or use devices to count their steps.

In different places, people have different names for long walks. For example, in Canada and the United States, they often call it hiking, while in New Zealand, it might be called tramping. Walking is also popular in cities, where people might take short walks to see sights or enjoy the surroundings.

There are many groups and organizations that support walking and help people enjoy it. These groups often organize events and trips for people to walk together.

Tourism

Walking tours are popular in many cities, where guides lead groups through historical areas. There are also organized trips to places like the Himalayas for longer walks. Many countries have special paths for walking, such as in Europe, where there are long trails connecting different places. Famous walking routes include the Camino de Santiago and the Way of St. James.

Each year, many countries host walking events. One of the biggest is the International Four Days Marches in the Netherlands, where people walk long distances over four days. In the United States, there are big walks like the Labor Day walk on the Mackinac Bridge in Michigan and the Chesapeake Bay Bridge Walk in Maryland. Some walks are done to support charitable causes, with participants collecting money for important projects.

Walkability

Main article: Walkability

In many cities, planners are working to make areas friendlier for walking. This means creating places where people can walk safely and comfortably to do things like shopping or visiting friends. Some areas are designed to be mostly for walking, with special paths and streets that are quiet and close to homes and shops. Cities like Venice in Italy are great examples of places made for walking, with many streets that cars cannot use.

Walking is also a good way to travel without polluting the air, making cities cleaner and healthier. Many cities around the world are trying new ideas to help people walk more, like special paths just for walkers and riders of bicycles.

Flânerie

In big cities like Paris, there is a tradition of people walking around just to enjoy looking at the city and its buildings. These walkers are called flâneurs.

Potential health effects

Regular walking can help boost confidence, energy, and mood while supporting weight control and reducing stress. It can also improve memory, learning, and concentration, helping overall health.

Studies show that walking just over 2,000 steps a day may lower the chance of serious heart problems, and more steps can further reduce health risks. Walking for about two and a half hours a week may also help prevent feelings of sadness. For people with certain health conditions, walking can improve important body measurements and cholesterol levels. Walking may even help spark creative thinking.

In robotics

Main article: Robot locomotion

The first successful walking robots usually had six legs. As technology improved, robots could walk with fewer legs, and now some can walk on just two legs, like ASIMO. Even though robots have gotten better, they still don't walk as smoothly as humans because they often need to keep their knees bent to stay balanced.

In 2009, a Japanese roboticist named Tomotaka Takahashi made a robot called Ropid that could jump three inches off the ground. This robot could stand up, walk, run, and jump. Many other two-legged walking robots have been created over the years.

Mathematical models

Scientists have created many math models to understand how we walk. These models fall into four main groups.

The first group uses simple rules based on what we already know about how our bodies move. The second group uses special math to copy the way muscles and joints work together. The third group uses computer programs to find the best ways to move. The last group focuses on copying exactly how we move without trying to explain why.

Animals

Main article: Terrestrial locomotion

See also: Gait

Horses

Main article: Horse gait

Horses walk at a steady pace, moving at about 4 miles per hour. When a horse walks, its legs move in a pattern: left hind leg, then left front leg, followed by right hind leg, and finally right front leg. During this walk, the horse always has three legs on the ground, except for a quick moment when shifting weight. The horse's head and neck move up and down a little to help keep its balance.

Elephants

Elephants can walk forward and backward but cannot trot, jump, or gallop. When walking, their legs move like pendulums, with their hips and shoulders going up and down as each foot touches the ground. Though they have a faster way of moving, it is not true running. At their fastest, elephants can move about 18 km/h, which is faster than most four-legged animals at a walk.

Walking fish

Some fish can move on land for periods of time. These are called walking fish. They can also move along the sea floor, like certain types of fish that use their fins to "walk."

Insects

Insects have six legs and must work together to move well. Scientists have studied how insects like locusts, cockroaches, stick insects, and fruit flies walk. Insects change their walking patterns depending on how fast they need to go.

When moving slowly, insects often use a wave-like pattern where one leg moves at a time, starting from the back and moving forward. This keeps five legs on the ground and is very stable.

At medium speeds, insects may move two legs at once, with the legs on opposite sides of the body moving together. This is also stable.

When moving quickly, insects often use a tripod pattern where three legs move together while the other three stay on the ground. This pattern is less stable but helps insects adjust if their steps get uneven, which is useful when moving over rough surfaces.