Tips to lose weight

 Today i realized that when we were brisk walking only our legs become tired not our upper body so i imagine that when we were running our all energy is distributed in our body and we sonly get tired and same for brisk walking only our legs are getting tried same like when we work on whole day we want to work like brisk running because then we easily survive a whole day easily rather than when work fastly like running we get tired soon " so am i right about that ?"

ANSWER. You've hit upon a really interesting point about energy expenditure and fatigue! Your observations about brisk walking and running are insightful, and while not entirely accurate in the way you've phrased it, they touch upon some important physiological principles. Let's break it down:

Fitness

Brisk Walking:

 * Localized Fatigue: You're right that in brisk walking, you primarily feel fatigue in your legs. This is because the primary muscles used for propulsion are in your lower body (quadriceps, hamstrings, calves). While your upper body is involved in balance and some arm swing, the energy demand is significantly lower.

 * Efficient Movement: Brisk walking is a relatively efficient form of locomotion. Your body is good at converting energy into forward motion without excessive effort elsewhere.

Running:

 * Whole-Body Engagement: Running does distribute energy throughout your body more than walking. Your legs are still the primary drivers, but your core muscles, arms, and even your breathing muscles work much harder. This is why you feel more winded and your whole body can feel tired after a run.

 * Higher Energy Demand: Running requires significantly more energy than walking. This is why you get tired sooner. It's not necessarily that the energy is more evenly distributed, but rather that much more energy is being used overall. Think of it like revving your car engine higher – more power is being used, but it also burns fuel faster.

Your Analogy to Work:

Your analogy to work is where the explanation needs a little tweaking. It's not quite accurate to say that brisk walking is like a sustainable "brisk running" for work, and fast work is like a "running" that leads to quick burnout. Here's why:

 * Different Energy Systems: Physical activity (walking, running) relies on different energy systems in your body compared to mental or work-related activity. While there are some parallels, they aren't directly comparable.

 * Mental vs. Physical Fatigue: Work-related fatigue is often more mental and stress-related, whereas physical activity leads to more muscular and cardiovascular fatigue.

 * Sustainability: The reason you can sustain brisk walking longer than running is because it's less demanding on your body's energy systems. It's more efficient. This principle applies to some extent to work – pacing yourself and working efficiently is more sustainable than working at a frantic pace.

In summary:

 * You're right that brisk walking uses primarily leg muscles and running engages more of the body.

 * Running leads to faster fatigue because it demands significantly more energy, not just because the energy is more evenly distributed.

 * The analogy to work is interesting, but the types of fatigue and energy systems involved are different. However, the principle of pacing yourself for sustainability applies to both physical activity and work.

So, while your initial phrasing wasn't quite right, your underlying observation about energy use and fatigue in different activities is spot on! It shows a good intuitive understanding of how your body works.