Strength Training Nutrition: Diet Beyond the Protein Shake
- Shrey Aggarwal
- 14 minutes ago
- 7 min read
A 78kg (172lb) club lifter came to me in March, stuck at the same squat for eleven months, drinking three protein shakes a day. His protein intake was 2.4g per kilo. His carbohydrate intake was 180g across the whole day, and he was training five times a week. Nothing about his protein needed changing. He was training hard on an energy budget that couldn't support it.
Strength training nutrition and diet is three numbers, not one: enough total protein (1.2–1.6g/kg spread across meals), enough carbohydrate to support hard training and recovery, and enough total energy to build from. The shake is optional. Most stalled lifters are short on calories, not protein.
That's the short version, and it's the opposite of how most lifters allocate their attention.
Quick Overview
How much protein do you actually need as strength training nutrition/diet?
Between 1.2 and 1.6g per kilogram of bodyweight per day for most lifters, and the top of that range is a ceiling rather than a target. The largest pooled analysis of protein supplementation and resistance training found gains plateaued at around 1.62g/kg/day, with no additional benefit above it (Morton et al., Br J Sports Med, 2018). So 1.6 is where the returns stop, not where they start.
You'll see higher numbers quoted. The ISSN position stand recommends 1.4–2.0g/kg/day (Jäger et al., JISSN, 2017), and I think the upper half of that reflects the commercial environment the recommendation was written in more than it reflects the pooled data. In practice, I've never needed to push a healthy lifter past 1.6 to get a result.
For our 78kg lifter, 1.2–1.6g/kg is 94–125g a day. He was eating 190g. The extra 65g wasn't building anything; it was displacing carbohydrate on the plate.
Spread matters more than total once you're in range. Three or four feedings of roughly 25–35g across the day beat two large hits, because muscle protein synthesis responds to each meal rather than to a daily sum (Areta et al., J Physiol, 2013). That's achievable without a single scoop of powder. Two eggs and dal at breakfast, paneer or chicken with rice at lunch, Greek yoghurt or a tin of tuna mid-afternoon, fish or rajma with roti at dinner. In Manchester or Melbourne, swap in cottage cheese, beans on toast, or a chicken sandwich.
Vegetarian and vegan lifters sit at the top of the range and need more attention to spread, because plant proteins carry less leucine per gram. Pair iron sources with vitamin C at the same meal while you're at it, since the diets that run low on leucine usually run low on absorbable iron too.
Does protein timing matter after lifting?
No, not in the way the industry sells it. The idea that protein must be swallowed within thirty to sixty minutes of the last rep isn't supported by the evidence, and the pooled data show total daily protein outweighs both timing and source (Morton et al., Br J Sports Med, 2018). If you want the history of how that idea survived so long, the anabolic window has its own piece.
What matters is that a meal lands within a few hours either side of training and that the rest of the day is covered. Sprinting home to hit a window is effort spent on the wrong problem.
Does lifting deplete muscle glycogen?
Yes, and more than most lifters assume. A 2025 meta-analysis of 20 studies found a single resistance session dropped muscle glycogen by an average of 104mmol/kg dry mass, roughly a quarter of resting stores, with depletion scaling up with the number of sets and the length of the session rather than with the load on the bar (Hamidvand et al., Physiol Rep, 2025). Heavier, lower-rep work depleted less. High-set, varied-intensity work depleted more.
The whole-muscle number understates it. In elite power and Olympic weightlifters, 48% of type II fibres reached near-depleted levels of intramyofibrillar glycogen after a heavy session, even though the whole-muscle measurement looked moderate (Hokken et al., Acta Physiol, 2021). Intramyofibrillar glycogen is the pool sitting between the contractile filaments, and it's tied to calcium release and force production. You can finish a session with a respectable average glycogen reading and still have emptied the specific stores inside the fibres doing the work.
This is why the fatigue shows up in week three of a block rather than on day one. Local depletion accumulates across sessions when daily carbohydrate doesn't refill it, and nothing about how a lifter feels on any single day reveals it.
Do lifters need carbohydrate, or is that an endurance thing?
Lifters need carbohydrate, though the honest version of this claim is narrower than most strength coaches state it. A systematic review of 49 studies found that in a fed lifter, extra carbohydrate around a session didn't reliably improve performance in workouts up to about ten sets per muscle group. Benefits appeared in higher-volume work, in fasted training, and after glycogen depletion, particularly with two sessions in a day (Henselmans et al., Nutrients, 2022).
So the argument isn't really about the pre-workout banana. It's about the daily total. Strength athletes are commonly advised 4–7g/kg/day, with a floor near 3–5g/kg to cover resistance training demands (Iraki et al., Sports, 2019), and our 78kg lifter's 180g put him at 2.3g/kg. Below the floor, every day, for eleven months, while type II fibres were being partially emptied five times a week.
Energy availability: the number nobody tracks
Under-eating is the most common thing I find in stalled lifters, and it's rarely deliberate. It's what happens when protein takes up most of the plate, carbohydrate is treated as optional, and fat gets cut for aesthetics.
Low energy availability degrades bone health, endocrine function, immunity and training response, and it isn't confined to endurance sport (Mountjoy et al., Br J Sports Med, 2023). Male lifters get missed constantly, because the visible presentation, lean and muscular, looks like the goal. Persistent fatigue, disturbed sleep, dropping libido, frequent minor illness and a lift that won't move despite good programming are the pattern worth taking seriously. No supplement corrects this. A structured increase in total calories does, and nothing else.
What a lifting day looks like on a plate
For a 78kg lifter training in the evening, roughly: oats or poha with eggs and fruit in the morning, a full lunch built around rice or roti with a protein source, a real snack ninety minutes before training (a banana with peanut butter, or toast and honey), and a proper dinner afterwards carrying both carbohydrate and protein.
That's four protein feedings, carbohydrate at every meal, and no shake anywhere. If a shake replaces one of those feedings because you're travelling, fine. If it replaces a meal that would have carried 60g of carbohydrate, you've made the underlying problem worse while feeling productive about it.
Training twice in a day, or lifting fasted in the morning, is the one case where the pre-session feed genuinely earns its place.
Fueletics Perspective
I've stopped asking new strength clients about their protein first. I ask about carbohydrate and total energy, because that's where the problem is nine times out of ten, and because protein is the one variable most lifters have already over-solved.
The three numbers are individual. Your protein target moves with training age, diet pattern and whether you're in a deficit. Your carbohydrate need moves with weekly set volume, not with how heavy you lift. Your energy requirement moves with everything, including work and sleep. Guessing them is how eleven months disappear, so if you want yours calculated against your actual training load, start with a Fueletics assessment.
The lifter from March added 90g of carbohydrate a day and dropped one shake. His squat moved in seven weeks.
FAQ
Do I need a protein shake to build muscle?
No. Total daily protein of 1.2–1.6g/kg, spread across three or four meals, builds muscle whether it arrives as powder or food. Shakes are a convenience tool for people who struggle to fit in a meal.
How many carbs should I eat for strength training?
Around 4–7g per kilogram of bodyweight per day for most strength athletes, with a floor near 3–5g/kg (Iraki et al., Sports, 2019). Higher weekly set volume pushes you up that range.
Does weight training use glycogen?
Yes. A single session drops muscle glycogen by roughly a quarter on average, and nearly half of type II fibres can reach near-depleted intramyofibrillar levels after heavy work (Hamidvand et al., Physiol Rep, 2025; Hokken et al., Acta Physiol, 2021).
Can you build muscle in a calorie deficit?
Yes, but slowly, and mostly in newer or heavier lifters. Sustained large deficits cost strength and carry the health consequences of low energy availability.
Research References
Morton RW, Murphy KT, McKellar SR, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. Br J Sports Med. 2018;52(6):376–384. doi:10.1136/bjsports-2017-097608
Jäger R, Kerksick CM, Campbell BI, et al. International Society of Sports Nutrition Position Stand: protein and exercise. J Int Soc Sports Nutr. 2017;14:20. doi:10.1186/s12970-017-0177-8
Areta JL, Burke LM, Ross ML, et al. Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis. J Physiol. 2013;591(9):2319–2331. doi:10.1113/jphysiol.2012.244897
Hamidvand A, et al. Acute effects of resistance exercise on skeletal muscle glycogen depletion: a systematic review and meta-analysis. Physiol Rep. 2025. doi:10.14814/phy2.70683
Hokken R, Laugesen S, Aagaard P, et al. Subcellular localisation- and fibre type-dependent utilisation of muscle glycogen during heavy resistance exercise in elite power and Olympic weightlifters. Acta Physiol. 2021;231(2):e13561. doi:10.1111/apha.13561
Henselmans M, Bjørnsen T, Hedderman R, Vårvik FT. The effect of carbohydrate intake on strength and resistance training performance: a systematic review. Nutrients. 2022;14(4):856. doi:10.3390/nu14040856
Iraki J, Fitschen P, Espinar S, Helms E. Nutrition recommendations for bodybuilders in the off-season: a narrative review. Sports. 2019;7(7):154. doi:10.3390/sports7070154
Mountjoy M, Ackerman KE, Bailey DM, et al. 2023 International Olympic Committee's (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs). Br J Sports Med. 2023;57(17):1073–1097. doi:10.1136/bjsports-2023-106994
