Our expert says:
You'll lose hardly any - a week is a really short time and so if you start from a reasonable level, one week is probably going to cause almost no change at all. In fact, in some instances, if the person has been training really hard, it could even do them good. So I would not worry about it, you are unlikely to see a massive change. The main difficulty whe you return to gym is that you will feel weak, because your body is weakened by having to deal with flu. However, don't get despondent, because over a period of about a week, you'll regain all that strength and be able to take up exactly where you left off.
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