The ALM Index going from 7.8 to 8.4 kg/m² is really significant from a clinical perspective. The sarcopenia cutoff for men is typically considered 7.0 kg/m², so you went from "low-normal" to "solidly normal." This matters enormously for long-term health and independence as you age.

I often tell my patients: the muscle you build in your 50s and 60s is the muscle that will keep you independent in your 80s. Sarcopenia is one of the leading causes of falls, fractures, and loss of independence in older adults. What you're doing is investing in your future self.

Your strength numbers nearly doubled across the board. At 55, that's outstanding. The 5/3/1 program is a great choice — progressive, periodized, and joint-friendly compared to more aggressive programs.

I'm 53F and just started lifting 3 weeks ago after reading posts like this. Currently doing a basic full-body routine 3x/week. I'm embarrassingly weak — squatting with just the bar, doing pushups against the wall — but I'm showing up.

My question: how did you manage the protein on semaglutide? 180g seems impossible when I'm barely hungry enough to eat 1,400 calories.

First: squatting the bar and doing wall pushups is NOT embarrassing. That's exactly where you should start. Progression is what matters, not starting point. I started with 95 lbs on bench and now I'm at 185 — everyone starts somewhere.

Protein tips that work for me:

• Protein shake with milk in the morning — easy 40g when solid food feels impossible
• I eat my protein FIRST at every meal, before vegetables, before carbs. If I fill up, at least I got the most important macro.
• Fairlife protein shakes (42g protein, 150 cal) are a godsend on low-appetite days
• Greek yogurt, cottage cheese, beef jerky — high protein density snacks
• I aim for 180g but accept that some days I hit 140-150 and that's okay

The research on muscle protein synthesis in older adults is clear: the anabolic response to both resistance training and protein intake is preserved well into your 60s and 70s. It's somewhat blunted compared to younger individuals (a concept called "anabolic resistance"), but it can be overcome by:

1. Higher protein intake per meal (30-40g vs. 20-25g for younger adults)
2. Leucine-rich protein sources (whey, animal proteins)
3. Training volume/intensity that provides sufficient mechanical tension

The OP is hitting all three. Well executed.