for / both for

[Allifathima]

1. Exercise is good for weight-loss as well as health.
2. Exercise is good for weight-loss and health.
3. Exercise is good both for weight-loss as well as health.
4. Exercise is good both for weight-loss and health.
Do all grammatically OK and mean the same?

[Beeesneees]

Do Are all grammatically OK...

1 is okay
2 is okay
3 is incorrect. You cannot use 'both' and 'as well as'. You only need one of those two phrases.
4 is okay

Essentially they reflect the same meaning.
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Cheers m' dears!