Trading the Tokyo session from a Western time zone means late nights or early mornings. Sleep takes a hit, and decision quality takes a bigger one.
Research on sleep deprivation shows slower reactions and worse judgment, effects similar to mild intoxication after a night of poor sleep. Scalping demands both speed and judgment.
The trade-off is that Asian hours can look attractive. Spreads are often tight on JPY pairs, and movement is steady. But a tired brain makes errors that wipe out the edge.
A sustainable approach is choosing sessions that match the body clock. A trader in Europe has the London session during waking hours. One in the Americas can use the New York session.
If Asian hours are essential, a consistent schedule, with the same sleep and wake times, works better than irregular all-nighters.
The journal can reveal the cost. Compare the results of late-night trades with daytime ones. The difference is often larger than expected.
Which session fits the sleep schedule best, and what does the data say about late trading?