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  1. Apr 20, 2023 · Asthenia (body weakness) can cause both physical and, in some cases, mental fatigue. Moving your body becomes difficult or impossible due to a lack of energy, muscle twitching, or cramps.

  2. Feb 7, 2014 · Sometimes evolution is stupid, and the human body is proof. Here are the most problematic physical and behavioral “scars of evolution” we humans have to deal with.

  3. May 21, 2021 · We humans have been evolving for millions of years and — as any good biologist will tell you — in response to pressures in our environment, we are evolving still. So how come our bodies are so...

    • Barbara J. King
  4. Jan 14, 2014 · Since deterioration with age (in humans this might be less elastic skin, weakening bones or memory loss) confers no advantage to the individual, why it happens has long been a puzzle to...

  5. Mar 23, 2021 · There are currently more than 300 theories on why we age, and experts are learning more every day. Let’s explore why humans age, and how you can slow down the effects. Types of aging

  6. Sep 7, 2018 · What causes human bodies to age? Most scientists agree that nine main factors are involved in the process of getting old. Here’s what scientists know about the biology behind aging.

  7. Jul 15, 2022 · Weakness or asthenia refers to feelings of physical and cognitive fatigue or loss of strength. It can be the result of a wide range of causes such as behavioral habits, side effects from medication, or underlying illness.

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