If you want more out of the time you’re investing into the gym then I would definitely read on.
Working on each muscle 2-3 times per week is far superior for GAINS than just once per week like in a typical bro-split.
The current body of evidence indicates that frequencies of training twice a week promote superior hypertrophic outcomes to once a week. It can therefore be inferred that the major muscle groups should be trained at least twice a week to maximize muscle growth.
The main reason training this way is better is because of the increased muscle protein synthesis across the week. This is the process by which your muscles grow. MPS is what you’re trying to trigger with each workout and it only lasts for a maximum of 48 hours post workout in beginners. This number is reduced for intermediates and advanced individuals at up to 24 hours.
Let’s put it in simple terms
MPS will last a maximum of 48 hours, meaning you’ll only be growing for a maximum of 2 days. That’s 5 days of no growth if you train each muscle once per week. Do you see how being sore for longer than 2/3 days is now ineffective and actually a hindrance?
Soreness is not a sign of a good workout. Some soreness can be a sign you’ve had some new stimulus but it isn’t the case that the longer you’re sore the better you’re workout. Triggering MPS however should be your main focus.
We want to elevate MPS for as long as possible across the week whilst managing our fatigue and soreness and of course getting adequate nutrition in too, to make use of the higher protein synthesis. One of the ways you can easily do that is by splitting up your 4 exercises which were on a Monday into two 2 exercise chest sessions. Do one on Monday and one on Thursday. Despite doing the exact same amount of total weekly sets for the chest, you’ll get way better results! This is a simple change you can make, but more so just an example of how frequency and MPS works. I would suggest the routines in the above image.
The vast majority of people I’ve worked with have been in the gym following protocols within the framework highlighted above.
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