Iron Man Stamina – PDF download by Tom Crawford. IMS™ is authored by Tom Crawford, a chemical engineer from Raleigh in North Carolina. Crawford has had to deal with erectile problems himself that left him embarrassed. His shame leads him to pursuit for a cure, not any surgical process but a sustainable way to restore the strong erection that all men should be able to attain. All the findings and revelations of Crawford have been documented in this guide that can alter the lives of millions of men.