Trading Options At Expiration

Read the book "Trading Options At Expiration" by Jeff Augen.  In this book,  Jeff discussed the three major forces that happens during Expiration day:

• Implied Volatility collapse
• Strike Price pinning effects
• Rapidly accelerating Time Decay

This is a totally new concept for me as it involves trading option on that single day.  That is a Day Trading options.  I am not ready to day trading options.  Making a note here to revisit at later time.