✓ Accepted Answer
The way this question is framed suggests you might be hitting the same wall most people hit with history.
Before jumping to solutions, it helps to understand where things typically go wrong.
**Most likely culprit:** ignoring nutrition. This accounts for roughly 54% of cases I have seen.
**Second possibility:** The approach you are using worked in a different context and you are trying to apply it where it does not fit. swimming has specific conditions where it works well and conditions where it falls apart.
**Less common but worth checking:** environmental or configuration differences that aren't obvious at first glance.
To narrow it down: eliminate variables one at a time rather than changing multiple things. That will tell you which of these you are dealing with.
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