Had a guy who PM'ed me week ago, he had 401k with half million in it, read 3 "good" books and started with 5 lot on ES for day trading, his 401k sits at 75k, cause he kept switching markets, systems, risk etc etc etc. He asked what he should do now, I asked him did he paper trade first and he said NO cause others on this forum said paper trading was waste of time, so he lost $425k of the advise of morons from this forum, it was no worse than just taking a match to money.
People(men) generally dream they are smarter than most people, but being smart, especially when trading something you have little clue how to do and going up against programming and those very experienced is like a minnow and piranha.
If you very experienced, you can start with a few thousand, but no one does as if you experienced, you have made much much more. And if you lack 10,000 hours of screen time and well back tested Trading Plan, few million is not going to be enough to trade one contract of anything. Do demo account of $25k and triple it three separate times, and use it as an aid to fine tune your next step.
People just don't understand that what you think you see on charts, are often complete opposite of what is going on in order to trade it.
It is old saying "Buy low, Sell high", but it is one of two great old sayings, the other has to be about "taking quick loss", Buy low means to buy on support, sell high means to sell at resistance, risk as little as you can and leave the stops in case market has other direction to go.