I used to bet up to 2% of my savings on each bet but as that’s grown I’ve cut down to a maximum of 1% per bet. Exceptions apply when I’m arbitraging. I find that pretty reasonable as I’m not worried about losing 20 bets in a row and I like a bit of uniformity between bet amounts. Even the most experienced bettors will lose 20 bets in a row multiple times, so it wouldn’t make sense to bet much more than a few percent of what you have.
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