How many rest days does CBUM take?
The Chris Bumstead workout routine follows an unconventional 8-day training split. Chris Bumstead's workout plan involves training three days in a row, followed by one rest day.
I train back, chest, hamstrings/glutes, shoulders, and quads all on separate days. People often ask what days I train certain body parts and my answer is I don't. I have a 5 day rotation and rarely take days off unless I feel I need to.
It is generally recommended that bodybuilders get 1-2 days of rest per week, with a whole week of rest every three months. You can split train and focus on different muscle groups each day, so while you're working on your shoulders, your legs get a rest and can recover adequately.
Chris currently trains with a 5-day split routine, or 'bro split'. This allows him to hit his focus areas with sufficient intensity and recovery time.
It's recommended to take a rest day every three to five days. If you do vigorous cardio, you'll want to take more frequent rest days. You can also have an active rest day by doing a light workout, like gentle stretching. To determine when you should rest, consider the recommendations for aerobic activity.
One study found that it took 72 hours of rest — or 3 days — between strength training sessions for full muscle recovery, while research from the ACE Scientific Advisory Panel says that a recovery period could be anywhere from two days up to a week depending on the type of exercise.
Rest days are an important part of exercise for all levels of fitness. A person should take a rest day every 7–10 days or as needed to help the body and mind recover. A rest day can be an active day that incorporates gentle exercises such as walking or yoga. Alternatively, a person may opt for a full day of relaxation.
There's a reason everyone – yes, even pro athletes – schedule quality rest into their training schedule. Downtime gives your body the chance to repair and grow stronger so you can perform at your best.
It is an intense routine that goes from low to medium to high-intensity exercises and only rests once a week in his time. Arnold Schwarzenegger was known for training twice a day in the morning and afternoon. He split his exercises between these periods and never misses a single day.
Taking two to three days off from intense exercise each week while engaging in some form of active recovery will allow you to get your blood flowing to help facilitate muscle repair.
How many rest days does it take to lose muscle?
Some research suggests that you can start to lose muscle in as quickly as one week of inactivity - as much as 2 pounds if you are fully immobilized (3). And another study suggests your muscle size can decrease by about 11% after ten days without exercise, even when you aren't bed ridden (4).
I need to get eight hours of sleep, minimum. Sleep is so crucial for growth as a bodybuilder.”

Each muscle group should be trained 2 to 3 days per week with at least 48 hours separating the same muscle group. For example, if you worked out your legs on Monday, you'd have to wait until at least Wednesday before working out those muscles again.