Nutritional deficiencies, oxygen starved muscles and tissues, lack of sleep, weakness of pathways from the brain to spinal cord - muscles - nervous system and diseases of nerves can cause weakness, which can cause abnormal sensation, numbness and tingling in body. A pinched nerve or ruptured disk, multiple sclerosis, chronic infections and poor metabolism can cause such conditions. Sometimes, tiredness can happen when a person suffers from stiffness in body part (caused by physical or emotional problems) and to prevent fatigue and weakness, these warning signs should be identified.

Body cells need oxygen to work properly and poor inflow of oxygen to the cells can cause damage and this can cause the formation of free radicals which interferes with metabolism. Oxygen intake is important, although, it is mild free radicals generator, but one can see stronger free radical formation in oxygen deprived environment. If the nerves are overactive, it can cause constriction of nerves and this can reduce oxygen flow to the blood vessels and cause pain. Reduced flow of oxygen can cause vasoconstriction which reduces blood flow to various body parts and these results in formation of metabolites and inflammation.

People, who lead a sedentary life and are advised to go for exercising, are suggested to regulate the exercising activities as too much of exercise in one time can cause more pain due to the increase in heart rate variability and parasympathetic nerve functions. Herbal vitality supplements - Revival capsules can be taken to fight free radicals and to enhance general energy levels. It contains herbs which can improve metabolism, increase absorption of minerals into the bloodstream and eliminate infections of the digestive tract to prevent fatigue and weakness.

Herbal vitality supplements contain Terminalia chebula, which was tested on old animals having compromised antioxidant defense and these animals were exposed to high level of oxidative stress. After treatment with the herb, the level of antioxidants increased in kidneys and liver of the animals. Similarly, the ingredient nutmeg can help in reversing the problem of adrenal fatigue and metabolic burnout. Adrenal fatigue refers to the problem where the adrenals are underactive and it causes adrenal insufficiency where the signals to brain to release chemicals from glands is poor, rather the brain receives the signals of stress, and the person secretes corticotrophin, which causes the release of adrenocorticotrophin and this acts upon glands that rest on the kidneys. The interaction of the three acts upon the hypothalamus - pituitary - adrenal axis to restore it to normal. Hence, one can prevent fatigue and weakness taking these herbal supplements.

Further, the condition of metabolic burnout refers to the accumulation of low grade stressors in the metabolism causing the condition of fatigue and it can lead to complications such as depression. This can cause fat accumulation e.g. obesity that can be prevented by taking herbal vitality supplements such as Revival capsules, which contains Commiphora mukul and Terminalia chebula. Metabolic burnouts can be cured and one can revive the natural metabolism by taking extracts of ashwagandha, nutmeg, Terminalia chebula, Commiphora mukul which are some of the ingredients of the capsules.