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A 35-year-old member asked:

How long will it take for your muscles you built to start to atrophy and lose muscle?

1 doctor answer1 doctor weighed in
Dr. Laurence Badgley
General Practice 54 years experience
Few weeks: How long for toned muscles to atrophy from disuse? Evidence indicates two weeks of strict bedrest causes significant muscle weakness & dysfunction; which begets further weakness & escalating disuse. Degree of weakness is likely dependent upon baseline muscle mass/tone.This phenomenon seems explanatory for weak/spastic/pained muscles contributory to onset of fibromyalgia after a serious illness.

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A 35-year-old member asked:

If I stop doing something how long before the muscles start to atrophy?

1 doctor answer1 doctor weighed in
Dr. Alexander Nein
Plastic Surgery 35 years experience
A Few Days: Even after a few days of inactivity you muscles will begin the process of diminishing in strength and size. Even relatively light workouts can maintain muscle tone, however. Space station astronauts engage in regular exercise and muscle conditioning so that their muscles (including their heart) will be able to function properly upon their return to gravity.
Belgium
A 16-year-old female asked about a female:

How long does it take to lose muscle when you put your fasting?

1 doctor answer3 doctors weighed in
Dr. Heidi Fowler
Psychiatry 26 years experience
You can start to: lose muscle very quickly with fasting. You will likely use up the glycogen in your liver. But it won't be long before muscle is being used for energy.

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Last updated Oct 27, 2020

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