Tracking lifts drives gym progress beyond muscle pump sets

Gym progress often stalls for practical reasons: poorly timed cardio, untracked sets, draining warm-ups and nutrition that overlooks carbs.

Fitness expert Sarah Mackay said in a recent video that plateaus can come from small habits rather than bad genetics or a failed programme. She pointed to four recurring choices that can leave regular gym-goers working hard without a clear return: hard cardio around lifting, pump-focused sets, overlong warm-ups and protein targets treated as the whole nutrition plan.

Cardio timing changes the lift

Mackay said her early routine included “at least 20 minutes of hard cardio either side of every lifting session,” a pattern she later moved away from. Her current approach separates demanding endurance work from strength training, placing cardio and lifting in different parts of the day when possible.

The reason is mechanical as much as motivational. Heavy or intense cardio before weights can reduce the energy available for compound lifts, especially lower-body work that already taxes the same muscles and nervous system.

A systematic review cited in the source found better lower-body strength gains when resistance training came before endurance exercise. Across the studies reviewed, lower-body one-rep maximum improved by an average of 3.96kg more than when cardio was completed first, while aerobic fitness gains were not meaningfully changed by exercise order.

Pump sets hide weak tracking

Mackay also warned against building most training around the feeling of a muscle pump. Pump sets usually involve moderate to high repetitions with short rests, often around the 10–25-rep range, creating temporary swelling as blood and fluid collect in the working muscle.

Exercise scientist Brad Schoenfeld has described that process as cellular swelling, where veins are compressed while arteries continue pushing blood into the muscle. The effect can feel productive, but it is not the same as measuring whether training loads, repetitions or total work are rising over time.

Researcher and coach Dr Milo Wolf said the link between pump and muscle growth is still unclear. “If one exercise gives you more of a pump and the other less, that is not a good reason to pick one exercise over another,” he said.

Mackay’s alternative is less flashy: “keep your main strength training as basic working sets,” such as 3 sets of 6-12 reps. That structure gives lifters numbers they can record, repeat and improve, making progressive overload easier to see than a temporary sensation in the muscle.

Warm-ups should preserve output

Warm-ups are meant to prepare the body, not compete with the session itself. Mackay said light cardio and lighter versions of the planned exercise are generally enough to raise blood flow and rehearse the movement pattern before working sets begin.

One study in the Journal of Strength and Conditioning Research found that 20 minutes on a stationary bike before leg-press warm-up sets improved one-rep maximum more than leg-press warm-up sets alone. The distinction is intensity: a warm-up that sharpens performance can help, while one that drains effort can cut into the work that drives adaptation.

Carbs matter after protein

Nutrition is the fourth pressure point. Mackay said protein is important but its benefits level off once intake reaches roughly 1.6-2.2g per kilogram of body weight, shifting attention to whether the athlete has enough energy to train well.

Her advice is to stop treating protein as the only priority. “Carbs, however, give you energy to train and make sure you have enough energy throughout the day,” she said, adding that lifters should prioritise them when training output is suffering.

If those basics hold, the path forward is straightforward: separate hard cardio from lifting, track working sets, keep warm-ups targeted and fuel sessions with enough carbohydrate. If fatigue, poor recovery or stalled loads continue despite those changes, the open questions become sleep, total calories, programme design and whether the athlete is allowing enough recovery between hard sessions.