This space contains a selection of unique educational materials conceived by Dr Siff as a brain-teasing resource aimed at investigating existing ideas and appplications of exercise science and biomechanics. Its central feature is his collection of "Puzzles and Paradoxes (P&Ps) of Exercises Science" which encourages the use of creative methods of thinking or Propositional Analysis to re-examine the scientist's view of the world of human performance, in a manner like that of the classical Grecian philosophers.. Its aim is not so much to provide definitive answers, but more to stimulate one's powers of critical thinking, logical reasoning, problem-solving and decision-making. Puzzles and Paradoxes Introduction The pedagogy of puzzles & paradoxes (P&Ps) Rest Intervals High Speed Training Speed of Action in Muscle Fibres Intensity and Volume in Weight Training 'Plyometric' Exercises Number of Repetitions Training to Failur Isokinetic Exercise and Testing Isotonic Muscle Action Abnormal Foot Pronation Use of Isometric Exercises Static and Dynamic Muscle Contraction Emphasis on Cardiovascular Trainin Categorisation of Certain Muscles Advice to Avoid Breath-holding Monitoring of Heart Rate 'Pulling the Abdominals In' Resistance Training Irregularity of Heart Rhythm Attention Span of Children Lifting a Weight in a Straight Line Fitness Testing for Novices The Vertical Jump Test Myotatic Setch Reflex Obsession With Cardiovascular Training Maximum Muscle Tension Specifity May Not Be As Specific Cyclic Motion in Sport Newton's Laws Use of the Definition P = F.v Stabilising and mobilising Muscles Osteoporosis Open-Closed Chain Reactions Birth Pains Endorphin paradox Treatment of Knee Conditions Periodization Brain and Sport Motor Qualities and Fitness Components Overtraining Cardiac Fatigue Free radical paradox Contraindicated exercise paradox Endurance Paradox Muscle classification paradox Prime mover paradox Placebo & Training paradox Body mass gain or loss Muscle paradox Isometric paradox Back pain paradox Message to Biomch-L The evolution of bodymass adjustment formulae Biomechanics of cricket bowling Facts and fallacies of fitness Muscle Physiology - Muscle Action Pilates revealed Reflections on The Force-Velocity Curve PNF as a Training System Upper-lower abs controversy Balance On Power On the Electrical Stimulation in Sports