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Sticking to training isn’t a matter of motivation. It’s a matter of momentum.
When you train alone, it’s easier to postpone. A long day, low energy, competing priorities. Skip once and it becomes easier to skip again.
But behavioural science suggests something simple and powerful: who you train with matters.
Research consistently shows that training with someone else increases follow-through, effort and long-term consistency. Social support is one of the strongest predictors of exercise adherence, and studies suggest performance can improve by up to 24% when working alongside a partner.
One explanation is the Köhler Effect — a well-documented phenomenon where individuals persist longer when exercising with someone else, even when ability levels differ. Effort feels more manageable. Accountability increases. Output often rises without a corresponding increase in perceived strain.
In practical terms, this means sessions that might have been skipped get done. Not because motivation is higher, but because the structure supports momentum.
Motivation fluctuates. Accountability stabilises.
When someone else expects you to show up, the threshold for action lowers. You rest less. You stay engaged longer. You complete the final set.
Over time, these marginal gains compound. Consistency is rarely about intensity. It is about reducing the psychological and logistical barriers that prevent repetition.
Training with a partner, friend, housemate or coach introduces a light layer of social commitment that makes adherence more likely.
Training in twos also makes practical sense.
The average UK gym membership is approximately £55 per person per month. For two people, that equates to £110 per month or £1,320 per year. Over two years, that reaches £2,640, excluding price increases.
A Fittle Box starts from £1,250 and includes two sets of dumbbells. There are no recurring monthly fees. For two people, the system can effectively pay for itself in under a year compared to dual gym memberships.
Beyond cost, access matters. Training at home removes commute time, equipment queues and scheduling friction. Two sets of dumbbells allow for side-by-side sessions without compromise.
Lower friction increases repeat behaviour. Repeat behaviour builds strength.
The takeaway?
If consistency is the goal, consider changing the structure rather than relying on willpower.
Train with someone.
Schedule sessions together.
Reduce the barriers that make postponement easy.
Strength is not built in isolated bursts of motivation.
It is built through repeated return.
About Fittle
Fittle is a UK-based premium home-fitness brand creating beautifully designed strength equipment for people who want gym-quality training at home. Fittle products are stocked in Selfridges and used in Soho House guest rooms and private homes across the UK.
