Glossary

• Isotonic Exercise

  In an isotonic exercise, joint movements and muscular contractions occur during the same repetition. The tension remains the same throughout the movement. Examples of isotonic exercises include bicep curls and push-ups.

• Isometric Exercise

  When you do isometric exercises or static strength training, you target your intended muscle groups while maintaining a stationary position. Classic examples include planking and various yoga poses.

• Isokinetic Exercise

  Isokinetic exercises are movements performed at static speed with resistances equal to the force of that particular speed. This is a physiotherapy method which typically uses equipment such as resistance bands and stationary bikes.

• Internally Rotate

  This refers to the inward direction of the rotational movement that you make with your arms and legs. When you rotate your upper arms toward your torso whilst keeping them close to your sides, you also round your upper back.

• IIFYM

  This is an acronym which stands for “if it fits your macros.” IIFYM is a type of dieting that allows people to eat whatever they want as long as these foods fit into their individual macronutrient (sourced from carbs, fats, and protein) limit per day.

• Hypertrophy Rep Range

  As the term implies, this is the ideal number of reps for achieving maximum muscle growth. Fitness experts believe doing eight to 12 reps help you train intensely and maintain correct form for optimum hypertrophy.

• Hulking Up

  When you hulk up, you’re psyching yourself up before a heavy lift. Blokes who hulk up at the gym typically grunt and groan before the lift to give them a psychological edge.

• HIRT

  This is an acronym which stands for high-intensity resistance training. Here, you combine weight training with high volume workouts to increase musculature and torch fat.

• HIIT

  An acronym which stands for high-intensity interval training, this refers to alternating periods of low- and high-intensity movements to achieve fat loss. An example of HIIT is alternating periods of walking for one minute and running for 30 seconds for a grand total of 30 minutes.

• High-Frequency Training

  High-frequency training entails hitting the same muscle group at least three times weekly, sometimes more. To help ward off potential injury, trainers often lower exercise volume.

• High-Density Lipoprotein (HDL)

  Also known as “good cholesterol,” HDL cholesterol helps maintain optimum blood vessel function and boost cardiovascular health. High HDL cholesterol levels help keep heart issues at bay.

• High Impact

  When you do high impact movements, you move your feet off the ground simultaneously. Examples include burpees, plyo box jumping, basketball, tennis, and step aerobics.