Does Cardio Kill Gains? No, but Here's How Much Is Too Much
Does cardio kill gains? Not in normal doses: 43 studies found no loss of muscle or max strength. When cardio does cost you and how much is too much.
Read the articleHypertrophy training explained with numbers: weekly sets, rep ranges, rest, effort and progression, plus the training myths that quietly stall muscle growth.
Hypertrophy training is lifting organized to build muscle: about 10–20 hard sets per muscle each week, most sets ending one to three reps short of failure, each muscle trained roughly twice a week, and a progression rule that adds reps or weight over time. Rep ranges from about 5 to 30 all work when sets are hard, so effort and progression matter more than the exact number.
Weekly hard sets, effort, and progression. At least 10 sets per muscle per week was associated with the largest gains in a dose-response meta-analysis (Schoenfeld, Ogborn & Krieger, 2017), and training a muscle twice a week beat once a week (Schoenfeld, Ogborn & Krieger, 2016).
| Dial | Starting point | Check or plan it |
|---|---|---|
| Weekly sets per muscle | 10–20 hard sets | Training volume calculator |
| Effort | 1–3 reps in reserve | RIR explained |
| Loads for the main lifts | Rated by RPE | RPE calculator |
| Progression | Reps, then weight | Double progression |
Count your own week before changing anything: the training volume calculator adds up direct and indirect sets for every muscle and flags the ones below 10.
Repeat the same exercises long enough to beat them. Add reps inside a range, then add weight; when even that stops, the cause is usually recovery or food, not the program.
Less than you think. Normal amounts of cardio do not cost muscle, and order matters mainly for leg strength (Schumann et al., 2022).
If you already train this way and still are not growing, the limiter may not be training at all: food, sleep, or consistency can cap every dial. Find out which bottleneck is actually first.
A plan built to add muscle: about 10–20 hard sets per muscle a week, sets mostly in the 6–12 rep range close to failure, each muscle trained about twice weekly, and a rule for adding reps or weight.
They overlap. Both need hard, progressive work; strength training adds more heavy, low-rep practice on the lifts you want to be strong at, while hypertrophy training uses more weekly sets per muscle.
Lab scans pick up growth within the first few weeks; the mirror usually takes two to three months. See how long it takes to build muscle.
Does cardio kill gains? Not in normal doses: 43 studies found no loss of muscle or max strength. When cardio does cost you and how much is too much.
Read the articleDouble progression: add reps within a range, then add weight and reset. Step-by-step rules, how wide your rep range must be, a worked example, and fixes.
Read the articleWhat progressive overload is, and how to do it with every lever — reps, load, sets, range of motion, effort, frequency — plus a simple rule to follow.
Read the articleCardio before or after weights? Lift first for strength, size and fat loss; cardio first only for endurance goals. Plus how long and how far apart.
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