IMM Lifestyle Books

For a woman in her twenties a healthy body fat percentage would be 23–27 per cent. The equivalent in a man would be 16 per cent. After the age of 45, a healthy woman would have 32 per cent body fat compared with 25 per cent in a man.

Predicted Maximal Heart Rate (PMHR). For women, this is found by subtracting your age from 226. You then calculate a THR range somewhere between 60 and 90 per cent of your PMHR. For lower levels of fitness or longer sessions, use 60 to 75 per cent of your PMHR; for higher fitness levels and shorter sessions, use 75 to 90 per cent of your PMHR.

Over the past 19 years, my journey through the health sciences has been paved with brilliant teachers and students along the way. Thank you to my colleagues Sally Lee and Tanya Wyatt, two of the best health and fitness professionals I am likely to ever know, for raising the bar. This book is a creative collaboration. To artist James Berrangé, for your enthusiasm, insight and commitment to this project – without you, this book would just be a good idea. To the team at New Holland and McGraw-Hill, thank you, thank you, thank you.
A book like this requires a lot of help. Abundant thanks are due to the following:
• For his mentorship, Professor Graham Louw, Department of Health Sciences, University of Cape Town
• For her generosity, Caroline Powrie, curator of the Anatomy Museum at Groote Schuur
• For making our lives simpler, Virgin Active Gym, Long Street, Cape Town
• Our fantastic models, Lara Turk and Terri Bruning of Cape Town City Ballet
• For her reliability, Glennis Harris of the ETA
• For their expediency and kind permission, David Brewer and Christa Dickey of the ACSM, David O’Brien and Gill Watson of Lippincott, Williams and Wilkins