Implied volatility rank (IVR) thresholds aren't fixed rules, they're guidelines that require market awareness and flexibility. Using S&P 500 (SPY) data from 2009–2018, the segment examines how adjusting IVR thresholds after extreme volatility events affects premium-selling P&L. Selling strangles at lower IVR thresholds after a VIX spike generates more occurrences but lower average returns. Raising thresholds during low-volatility periods improves P&L significantly. The key takeaway: preserve capital during low-IVR environments and deploy it aggressively when volatility spikes.