Warming Up on Sim Before the Bell

On the first session after a weekend, the hands are slower than the eyes, and a warm up exists to close that gap before it costs a fill. Ten minutes of simulated order entry before the cash open is not practice at the strategy, it is practice at the software: sending, modifying and cancelling, until the sequence sits in the fingers rather than in the head. The version described at orb trading routine richiebranson runs on the same instrument that will actually be traded, a detail worth keeping, since muscle memory built on a different tick size transfers badly. The trading part of the morning is unaffected. The typing part is not.
What a Warm Up Is For

Speed of execution, not quality of decision. Decision quality comes from the plan, and the plan was written before the session. What the warm up covers is the mechanical distance between deciding to enter and the order being live, which on a bad morning is four seconds and on a good one is under one.
Run the Whole Sequence, Including the Exit

Most people rehearse entries and stop there, which trains half a skill. The exit is the half that has to work under pressure. Send a simulated entry, attach the bracket, move the stop loss, take a partial, then flatten. That chain is what a live session asks for, and any link that is slow shows up here for free.
Same Layout, Same Hotkeys
The simulated account has to sit in the same window position with the same hotkeys as the live one. A warm up done in a separate demo application with a different keyboard map trains the wrong reflex, and the wrong reflex is worse than none because it executes confidently. Where the platform allows it, use the same workspace and switch the account.
The Way This Habit Goes Wrong
The failure mode is drift from warming up into trading. Simulated fills on a live premarket chart start to look like signals, an opinion forms about direction before the opening range exists, and the session begins with a position already argued for. Nothing about a simulated fill is real except the opinion it creates.
The fix is a hard stop time. The warm up ends at a fixed point, several minutes before the open, and the simulated account is closed rather than left running. Left open, it gets used during the session to test an idea, and testing an idea during a session is a way of trading without recording it.
When to Skip It
Skip it on a normal fourth or fifth consecutive session, when the mechanics are current. The warm up earns its place after a break, after a platform update, on the first day of a contract rollover, and whenever the instrument changes. Doing it every single day turns it into another item that gets performed rather than used, and the first hour has enough of those already.