ARTICLE

Liquid intake in human body.
Definition of liquid:liquid is a nearly in-compressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape. A substance that is flowing, and keeping no shape, such as water; a substance of which the molecules, while not tending to separate from one another like those of a gas, readily change their relative position, and which therefore retains no definite shape, except that determined by the containing receptacle; an inelastic fluid.

LIQUID AND HUMAN BODY
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Human body is not made by only one substance. It is made by mixture of some substances which exist as solid, liquid and gas. Solids like tissues,muscles,bones Liquids like blood, bone marrow and gases like Nitrogen, Hydrogen ,Oxygen are all present in our body. So the human body is made up solid,liquid and gas. 
Body fluids, bodily fluids, or biofluids are liquid within the bodies of human In normal healthy men, the total body water is about 60% of the total body weight; it is slightly lower in women. A 70 kg (160 pound) man, then, has 42 liters of water in his body. This is divided between ICF and ECF in a two-to-one ratio: 28 liters are inside cells and 14 liters are outside cells. This ECF compartment is divided into the fluid between cells - the interstitial fluid volume - and the vascular volume, also called the blood plasma volume. The vascular volume is divided into the venous volume and the secreted arterial volume; and the arterial volume has a conceptually useful but un-measurable sub-compartment called the effective arterial blood volume.
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HOW DOES OUR BODY KEEP OUR BLOOD IN LIQUID FORM

our blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.

First of all, blood remains in liquid form only inside blood vessels & heart not the whole body parts.

To form a blood clot, the soluble blood protein fibrinogen is converted to an insoluble form (fibrin) that entangle blood cells forming a mass & this needs a really long complicated cascade involving activation of 13 blood coagulation factors. This cascade, however can’t be initiated without platelets activation, so you need to activate platelets which help initiating that cascade which in turn convert fibrinogen into fibrin that entagle blood cells.

So why platelets remain inactive inside blood vessels?

Platelets need either a physical activation (to come in contact with a rough surface such as torn blood vessels) or chemical activation by many factors such as Throboxane A2.

Both physical & chemical factors are normally inhibited in a normal blood flow. Blood vessels remain intact & smooth, while other chemicals are formed to oppose the activation.

In case of blood coagulation inside blood vessels, another cascade is initiated to degrade it called (fibrinolytic pathway).

The fascinating thing about blood is it stays perfectly liquid in the circulation but on exposure to tissue trauma or taken out of the circulation, for example when taking a blood sample, it rapidly clots. Two mls of blood can generate enough thrombin to clot your entire circulation but as soon as activated by tissue trauma a complex system of proteins and enzymes found in the blood plasma and vessel walls comes into play which rapidly neutralise the thrombin. When this remarkable balancing act is even slightly out of kilter, a clot may form in the circulation, that is to say a thrombosis. One could say that plasma is a “clot in waiting”.

Incidentally when liquid blood samples are required, the samples are taken into specimen bottles containing anticoagulant and mixed to prevent the innate tendency for blood to clot. This needs to be done quickly to prevent a ‘dud’ sample.

HOW WE CAN KEEP OUR BODY IN GOOD CONDITION.

we can do this by: 1.Drinking enough water  2. Eating more of fruits and vegetable.

1. Drinking enough water: Water Protects Your Tissues, Spinal Cord, and Joints.

Water does more than just quench your thirst and regulate your body's temperature; it also keeps the tissues in your body moist. You know how it feels when your eyes, nose, or mouth gets dry? Keeping your body hydrated helps it retain optimum levels of moisture in these sensitive areas, as well as in the blood, bones, and the brain. In addition, water helps protect the spinal cord, and it acts as a lubricant and cushion for your joints.

Water Helps Your Body to Remove Waste

Adequate water intake enables your body to excrete waste through perspiration, urination, and defecation. The kidneys and liver use it to help flush out waste, as do your intestines. Water can also keep you from getting constipated by softening your stools and helping move the food you've eaten through your intestinal tract. However, it should be noted that there is no evidence to prove that increasing your fluid intake will cure constipation.

Water Aids in Digestion

Digestion starts with saliva, the basis of which is water. Digestion relies on enzymes that are found in saliva to help break down food and liquid and to dissolve minerals and other nutrients. Proper digestion makes minerals and nutrients more accessible to the body. Water is also necessary to help you digest soluble fiber. With the help of water, this fiber dissolves easily and benefits your bowel health by making well-formed, soft stools that are easy to pass.

Water Prevents You From Becoming Dehydrated

Your body loses fluids when you engage in vigorous exercise, sweat in high heat, or come down with a fever or contract an illness that causes vomiting or diarrhea. If you're losing fluids for any of these reasons, it's important to increase your fluid intake so that you can restore your body's natural hydration levels. Your doctor may also recommend that you drink more fluids to help treat other health conditions, like bladder infections and urinary tract stones. If you're pregnant or nursing, you may want to consult with your physician about your fluid intake because your body will be using more fluids than usual, especially if you're breast feeding.

How Much Water Do You Need?

There's no hard and fast rule, and many individuals meet their daily hydration needs by simply drinking water when they're thirsty, according to a report on nutrient recommendations from the Institute of Medicine of the National Academies. In fact, most people who are in good physical health get enough fluids by drinking water and other beverages when they're thirsty, and also by drinking a beverage with each of their meals, according to the Centers for Disease Control and Prevention. If you're not sure about your hydration level, look at your urine. If it's clear, you're in good shape. If it's dark, you're probably dehydrated.

2. Eating more of fruits: 

a fruit is the seed bearing structure in flowering plants. Fruit literally means the fleshy seed-associated structures of a plant that are sweet or sour, and edible in the raw state. 

Examples of culinary vegetables and nuts that are botanically fruit include corn, cucurbits (e.g. cucumber, pumpkin, and squash), eggplant, legumes  (beans, peanuts, and peas), sweet pepper and tomato. In addition, some spices, such as allspice and chilli pepper, are fruits, botanically speaking. In contrast, ruhbarb is often referred to as a fruit, because it is used to make sweet desserts such as piece, though only the petiol (leaf stalk) of the rhubarb plant is edible, and edible gymnosperm seeds are often given fruit names, e.g., ginkgo nuts and pine nuts..

Botanically, a cereal grain, such as corn, rice, or wheat, is also a kind of fruit, termed a caryopsis. However, the fruit wall is very thin and is fused to the seed coat, so almost all of the edible grain is actually a seed.