With increased motivation to resume physical activity, it is common to see people returning to exercise after periods of reduced activity. Although this transition is positive, it is not always adjusted to the body’s current condition.
After a break, physical capacity - namely strength, endurance and load tolerance - tends to decrease. However, the intention to quickly return to the previous level often remains, which can create a discrepancy between what the body is able to do and what is being demanded of it.
It is in this context that many situations of discomfort, overload or even injury arise.
Capacity vs load: a fundamental principle
The body’s response to exercise depends, to a large extent, on the relationship between the load applied and the tissues’ capacity to tolerate it.
Load can be understood as the volume, intensity and frequency of activity. Capacity refers to the body’s current tolerance, influenced by factors such as training level, recovery, sleep and general health status.
When load exceeds capacity, the likelihood of symptoms appearing increases. When it is adjusted progressively, it promotes adaptation and functional improvement.
The mistake of resuming where you left off
One of the most common mistakes is returning to activity at exactly the same level as before the break.
Although motor memory may remain, physical capacity does not necessarily match that intention. The result may be an inadequate response from the body to the load, expressed as pain, excessive fatigue or functional limitation.
In most cases, this type of response should not be interpreted as structural injury, but rather as a sign of mismatch between demand and capacity.
The importance of progression
Returning to exercise should respect one essential principle: progression.
This involves:
- starting with appropriate load levels
- gradually increasing intensity and volume
- including recovery periods
- monitoring the body’s response
Progression should not be based only on motivation, but on the body’s real capacity to adapt.
The role of the body’s signals
When returning to activity, some discomfort is to be expected. However, it is important to distinguish between adaptive responses and signs of overload.
Persistent pain, progressive worsening of symptoms or functional limitation are indicators that the load may be above the body’s current capacity.
Reading these signals appropriately allows the process to be adjusted and helps reduce the risk of interrupting activity.
Exercise and clinical support
Physical exercise, when well guided, is a central tool in health promotion and injury prevention.
In some cases, especially after prolonged periods of inactivity or when symptoms are present, a structured approach through clinical exercise may be useful.
This allows for:
- assessment of current capacity
- definition of initial load levels
- guidance of progression
- adaptation of the plan to the individual response
In conclusion
Resuming physical activity is an important step, but it should be done in an adjusted and informed way.
The relationship between load and capacity is key to how the body responds to exercise. Appropriate progression not only helps improve performance, but also reduces the risk of injury and supports consistent, sustained practice over time.
Bibliographic references
Gabbett TJ. The training-injury prevention paradox: should athletes be training smarter and harder? Br J Sports Med. 2016;50(5):273-80. doi:10.1136/bjsports-2015-095788.
Windt J, Gabbett TJ. How do training and competition workloads relate to injury? Br J Sports Med. 2017;51(5):428-35. doi:10.1136/bjsports-2016-096040.
Booth FW, Roberts CK, Laye MJ. Lack of exercise is a major cause of chronic diseases. Compr Physiol. 2012;2(2):1143-211. doi:10.1002/cphy.c110025.
World Health Organization. WHO guidelines on physical activity and sedentary behaviour [Internet]. Geneva: World Health Organization; 2020 [cited 2026 Apr 6]. Available from: https://www.who.int/publications/i/item/9789240015128
