Define the session and setup
Day trading generally opens and closes positions within a trading session. A workable research plan specifies the instrument, session, setup, entry condition and exit rule before evaluating results. Session boundaries need explicit definition in markets operating continuously. Closing before a session ends can reduce overnight exposure, but it does not remove rapid intraday price moves, execution problems or the possibility of substantial loss.
Model the execution burden
Short holding periods make spreads, commissions and slippage important relative to the expected price move. A strategy showing a small gross gain on each trade can lose money after repeated costs. Test partial fills, delayed decisions and periods of reduced liquidity. A chart's historical high and low do not prove that every assumed entry and exit was available to a real order.
Use limits and review records
A practice plan should define a session loss limit, permitted position sizes and conditions for stopping after errors or unusual volatility. Record missed trades as well as completed ones to avoid selecting only successful examples. FYLU does not provide an automated day-trading system or a performance promise. Treat backtests as research and use only assumptions you can explain and reproduce.