Summary
One 100g protein meal doesn't equal five 20g portions for building muscle. Distribution matters as much as total intake. The RDA of 0.8 g/kg is likely insufficient for muscle adaptation; 1.2-1.6 g/kg works better. Plant-based eaters should combine sources (pea + rice) for complete amino acid profiles. Post-workout cold immersion may blunt strength gains unless timed on rest days.
Key Points
- Muscle tissue renews completely every 50-100 days at approximately 1-2% daily turnover
- Resistance-trained individuals benefit from 1.2-1.6 g/kg protein daily; consuming significantly more provides no additional muscle-building advantage
- One 100-gram protein serving does not equal the anabolic stimulus of multiple 20-gram portions distributed across meals
- Animal sources demonstrate superior effectiveness for hypertrophy; plant-based eaters should combine sources like pea and rice for complete amino acid profiles
- Age-related reduced protein sensitivity in older adults can be substantially reversed through regular physical activity
- Post-training cold water immersion may blunt strength gains; timing on recovery days mitigates negative effects
- Collagen supplementation supports connective tissue and skin health but is suboptimal for muscle protein synthesis
Key Moments
Protein synthesis vs. protein accretion: why training demands differ from RDA
Protein needs for people doing regular resistance training are much higher than the RDA, which was set for sedentary adults.
"But it'd be nice to have, you know, what are some of the requirements for protein intake with people that are engaged in frequent resistance training, also some aerobic conditioning, not elite athletes, just regular people that are committed to health. And also, I hear a lot in the bodybuilding community that you should just eat one gram of protein per pound, which is 2.2 grams per kilogram body weight. I'd love to know what your thoughts are on that as well."
1.6g/kg protein maximizes muscle gains; elderly respond starting at 1.2g/kg
Meta-analyses show 1.6g/kg body weight optimizes lean mass with resistance training.
"Stu Phillips did a really nice one where they looked at increasing protein intake and increases in, they said, lean body mass and then also strength. And what kind of was striking to me and stood out to me was that with increasing amounts of protein, so when you start to get up to, for younger people, 1.6 grams per kilogram body weight was associated with a modest increase in muscle mass, but it was very minor increase in strength. And these were people that were doing resistance training. And the same went for elderly. They started to actually have increases in muscle mass at a little bit lower. They were 1.2 grams per kilogram body weight. And it was the same thing, modest increases in muscle mass and minor increases in strength. And that's where I felt like I thought muscle mass strength was easier to gain with resistance training than muscle mass. So I'm wondering, is this something to do with measuring lean body mass or maybe just the resistance training program wasn't robust enough to improve strength?"
Training frequency for muscle growth depends on age and training experience
Beginners may need 3 days recovery between sessions. As training adapts, daily sessions become possible.
"Yes, likely. Of course, you would like to get the full recovery and then the next training session so you optimize the reconditioning process and what you do notice i mean um depends on how young you are what training stage you are you are in if i mean i haven't seen a gym in in last week, but before that in a year or two or something like that."
Cold immersion right after lifting blunts muscle gains; wait at least 6 hours
Van Loon's research shows cold water immersion immediately post-resistance training impairs muscle protein synthesis.
"So, yeah, I mean, I think, I mean, with looking at heart rate variability and stuff like that, I mean, I've been experimenting with that myself as well with the cold showers and the ice baths. But, of course, from a muscle perspective, nothing makes sense on recovery after exercise that cold would actually be helpful."
Save cold immersion for rest days: first few hours post-training are critical for muscle
The first few hours after resistance training are essential for muscle repair.
"At least the first few hours, I think, are essential for the muscle."
Collagen supplements may benefit tendons, joints, and skin via connective tissue repair
Hydrolyzed collagen supports the connective protein network that transfers force from muscles to tendons and bones.
"Collagen nowadays is much seen as a potential supplement to support muscle conditioning."
Van Loon's personal routine: cycling 4-5x/week plus 1-2 resistance sessions
Van Loon cycles 4-5 times weekly with longer summer rides and does 1-2 resistance sessions. He eats most food at dinner.
"I exercise basically to keep everything as healthy as possible and that I can indulge myself with more food and I don't get too fat."
