Earlier quoted context omitted.
Maybe that works for you, but you'll never be strong/look strong weight training weekly. If you're "overtraining" from one weight training session per week, there's something very wrong. The average human only takes 48-72 hours to fully recover for most muscle groups in the body. It's also been proven that HIIT is much more beneficial for your system than LISS. It might "seem" more beneficial to you, but likely is no…
Long time lurker, finally registered to answer this. What's your definition of "strong"? I've been weight training once a week since March, following Doug McGuff's "Body By Science" method, and I have doubled my weights in 4 of the "big 5" in the last 3 months. While I'm led to believe McGuff's methods will never make anyone look absolutely massive, I disagree with your premise that you have to train more than once a…
The big criticisms of this kind of training would be:
1.) athleticism (he recommends machines, but free weights and calisthenics--replacing lat pulls with pull ups, muscle ups, etc is much better for athleticism)
2.) strength (he recommends machines, no momentum in movements, long recovery periods... this is basically how bodybuilders train to build the most muscle, but power lifters and athletes will optimize for maximum power, which includes momentum in their movements, and more endurance in their muscles)
3.) cardio/weight loss (you will burn more calories and build better cardio with higher volume, repitions)
4.) Injury (machines, low reps, high weights, all increase risk of injury)