First, a disclaimer: I have no financial stake in the sale of any of the other books mentioned below in my review of "Superslow: The Ultimate Exercise Protocol". I'm just interested in promoting safe, logical, scientifically sound methods for people that care about being in good physical condition without any unnecessary risks or wasted time. Any other books or authors mentioned are merely for the purpose of expanding the information available regarding the history (and refinements) of High Intensity Training (HIT) since Arthur Jones first began to popularize the method in the early 1970's.

It features 12 different 30-second exercises, with five seconds of rest in between. It’s great for beginners and athletes, syncs with your iPhone Health App to take your other daily movement into account, and the workout library has 22 presets that you can customize to create thousands of variations. You can swipe right or left during the exercises to see how much time you have left, watch the instructor, or listen to music from your iTunes.
Before anyone’s crowned Cap’n Crunch, remember form is key. Lie on your back with the knees bent and feet flat on the floor. With hands behind the head, place the chin down slightly and peel the head and shoulders off the mat while engaging the core. Continue curling up until the upper back is off the mat. Hold briefly, then lower the torso back toward the mat slowly.
Outdoors in nearby area and in nature was the most frequently reported exercise location in both training groups. This finding is in line with previous studies reporting that older adults prefer to exercise close to home [23, 30] and outdoors [23]. Interestingly, outdoors was the most common exercise location in both warmer and colder months despite the fact that colder months in Norway consist of more snow, higher prevalence of ice and relatively fewer hours of daylight compared to warmer months. The HIIT group had a higher proportion of sessions at a gym and sport facility compared to the MCT group. This finding is likely related to the fact that the HIIT group reported a higher proportion of sessions with exercise types commonly performed at these locations (e.g. swimming and other types of endurance training) compared to the MCT group. Some older adults might feel that it is easier to reach a high-intensity level with activities located at a gym and sports facility compared to outdoors.
Wellcome Library [Internet]. Rodway H. Training for childbirth - and after (1940). 2015 Sep 24 [cited 2015 Oct 3]. Available from:  Morris,33 Morris M. Basic physical training. London: Heinemann; 1937. [Google Scholar] and Vaughan,47 Youtube [Internet]. Vaughan, K. Childbirth as an athletic feat (1939). 2009 Feb 23 [cited 2015 Aug 30]. Available from: [Google Scholar] Pilates emphasized breathing techniques, training in sunshine and fresh air. Pilates also advocated the use of minimal and light-fitting clothing, recommended cold exposure and the importance of bathing and treating the skin.45,46 Pilates J. Your health. Nevada: Presentation Dynamics; 1934.
You know you should exercise more. You want to exercise more. But sometimes it's tough to squeeze a full workout into your busy schedule. The good news: A number of published studies show that you can stay in shape and burn enough calories to maintain or lose weight by doing mini-workouts throughout the day. In fact, research has shown that short bouts of exercise—as few as three 10-minute sessions—are just as effective as long ones, provided the total cumulative workout time and intensity level are comparable. Repeat any of the following exercises for a minute.
Physiological, psychological and EMG responses to the time to exhaustion tests are presented Figs 4 and 5. Leg RPE (Fig 4A), leg muscle pain (Fig 4B) and heart rate (HR, Fig 4C) increased over time (all P < 0.001). Cadence during the time to exhaustion decreased over time (P < 0.001). Planned comparisons for these aforementioned parameters are presented Fig 5. EMG RMS of the VL (Fig 5A), VM (Fig 5B), RF (Fig 5C) and the sum of these muscles (Fig 5D) increased over time (all P < 0.001). Planned comparisons for EMG parameters are presented Fig 5. Blood lactate concentration increased (from 1.3 ± 0.5 to 6.0 ± 1.1 mmol/L, P < 0.001) and blood glucose concentration decreased (from 5.3 ± 0.5 to 4.4 ± 0.3 mmol/L, P = 0.001) over time.
Exclusion criteria included major diseases or conditions such as severe heart disease, uncontrolled hypertension, obesity, osteoarticular pathology, and neurological disease. Criteria were evaluated on the basis of clinical history, resting ECG, and physical examination. Participants maintained their lifestyles and were instructed not to take part in any other physical programs throughout the study. At the time of the initial design, the study consisted of a 12-week randomized controlled trial with a frequency of 3 times a week, 36 sessions in all, ending with a new assessment of their wellness and the potential persistence of the results on functional/physical capacities.