Galen's Health (De sanitate tuenda) was the most important work on daily exercise, diet and health regimes in antiquity. This book presents the first reliable scholarly translation of this work in English, alongside the related theoretical work Thrasybulus. A substantial introduction and thorough annotation elucidate both works and contextualize them within the framework of ancient health practices, ancient conceptions of the body and debates between medical and philosophical schools. The texts are of enormous interest from three points of view: (1) the wide range of insights they give into ancient everyday lifestyles, especially as regards diet, bathing, exercise and materia medica, as well as aspects of daily intellectual life; (2) the light they shed on ancient debates within medicine and philosophy, on fundamental conceptions of the body and the relationship between body and mind; (3) the enormous influence that Health had in mediaeval and early modern times.

'This new translation by P. N. Singer, part of the important and evolving Cambridge Galen Translations series, makes two of his essays available to a modern audience … Singer brings a wonderful sense of clarify and precision, not least because of the way in which he talks us through the challenges of translating Galen so thoroughly.' Times Literary Supplement
'Both for scholars and for a wider audience taking an interest in health maintenance, then and now, this may be the best presentation of Galen's most relevant work in this area so far.' Teun Tieleman, Bryn Mawr Classical Review
'[T]his volume has something to say to specialists as well as those coming to Galen for the first time. … we find the warmest of welcomes into a perennially fascinating and striking ancient intellectual. Warmly recommended.' Benjamin Harriman, Metascience

P. N. Singer is a Research Fellow at Einstein Center Chronoi, Berlin and an Honorary Research Fellow at Birkbeck, University of London. He has published Galen: Selected Works (1997) and Time for the Ancients: Measurement, Theory, Experience (2022) and co-authored Galen: Psychological Writings (Cambridge, 2013), Galen: Works on Human Nature, Volume 1 (Cambridge, 2018) and Mental Illness in Ancient Medicine: From Celsus to Paul of Aegina (2018).