P90x is not intended for individuals who are already fit, but would like to go “from regular to ripped in 90 days”. The program is based off of the concept of “muscle confusion” which means your body avoids plateaus by constantly introducing new movements.
American Council on Exercise lists these pros and cons to consider:
What we liked:
- Recommends a fitness self-test to determine appropriate resistance/intensity levels
- Coaching cues encourage participants to work at a self-selected pace and take breaks when needed
- Variety and structure of workouts enhance adherence and reduce boredom
- Participants are urged to track progress and modify exercises as needed
- Most of the workouts move very quickly from one exercise to the next, increasing the risk of injury
- Upselling of supplements and foods is distracting
- Not appropriate for those without a baseline levels of fitness
- Intensity and dedication required may be discouraging to those who don’t have time to exercise 60 -90 minutes per day
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