Interval Timer

Interval Timer is a perfect app for your HiiT (High intensive interval Trainings)
After installation you got 3 predefined HiiT workouts .
You can customize your own workout cycle depending on your own needs.
This customizable stopwatch pack your exercises into a short amount of time.
Boost your excersises with gym timer:
Jump rope
Tabata
Running
Plank
Boxing
Fitness
HIIT training can literally have hundreds of forms. Depending on your objectives you can customize exercises, tools and time interval combinations to obtain the optimal result. If your progress grow try to configure your own workout
Example
: 20 seconds of intensive workout and 10 seconds of rest, 8 rounds - its a 4 minutes workout.
High-intensity interval training (HIIT)
, also called high-intensity intermittent exercise (HIIE) or sprint interval training (SIT), is an enhanced form of interval training, an exercise strategy alternating periods of short intense anaerobic exercise with less-intense recovery periods. HIIT is a form of cardiovascular exercise. Usual HIIT sessions may vary from 4–30 minutes. These short, intense workouts provide improved athletic capacity and condition, improved glucose metabolism, and improved fat burning
HIIT also significantly lowers insulin resistance and causes skeletal muscle adaptations that result in enhanced skeletal muscle fat oxidation and improved glucose tolerance
TABATA
According to a study by Japanese scientist Dr. Izumi Tabata, who founded Tabata training. High intensity training improved VO2 max (or your maximal oxygen consumption) by about 14%, while anaerobic capacity improved by 28%. These effects will help you shed those extra pounds of fat, while also building lean muscle.
CROSSFIT
A 2013 study by exercise scientists that participation in a CrossFit program significantly improved VO2 max and decreased body fat percentage in both males and females across all levels of fitness.
WOD - workout of a day