Built-in leverage and a market that barely closes remove two things every other trading style relies on for discipline: a natural size limit, and a natural stopping point.
Futures contracts carry high leverage by design, so a normal price move produces a large dollar swing per contract. Combined with markets that trade nearly 24 hours a day, there's rarely a forced pause to interrupt a bad decision, which makes ordinary biases like revenge trading and oversizing do outsized damage compared to lower-leverage instruments.
Contract size against time since the last loss, tracked automatically.
Pnlee's read: contract size nearly doubles in the hour after a loss, and losing sessions tend to run longer rather than shorter. Both point the same direction, toward trying to force a recovery instead of stepping away.
A loss during the day session gets carried into the overnight session with a larger position "to make it back before tomorrow," on a setup that wouldn't have met the original plan's criteria in daylight, calmer conditions.
“The market never closed. The decision to keep trading should have.”
PnL App can lock trading after a loss past a set threshold, putting a real stopping point into a market that otherwise never gives you one.