You can lift weights without stunting growth from around age 7-8, focusing on bodyweight, light resistance bands/weights, and proper form, with official bodies like the AAP and WHO supporting supervised strength training for kids to build strong bones and muscles, debunking the myth that it harms growth plates. The key is age-appropriate, supervised training with an emphasis on technique over heavy loads to prevent injury, with formal weightlifting often progressing later.
Strength training does not stunt growth…. however, maximal lifting (highest weight amount you can lift one to three times) may put you at more risk for injury to the growing areas of a child's body. Therefore, max lifting should be discouraged until after puberty.
The appropriate age for the initiation of formal weightlifting training can be as young as 10 to 11 years, provided that the biological age of the child and the emotional maturity of the child are reasonable.
Make sure you get plenty of sleep, avoid over-training, and consume good nutrients to keep your body performing optimally. If you commit to this and you never leave your body over-trained without good recovery resources, then you can't be stunted.
What the Science Actually Says About Strength Training and Growth Let's start with the big one: No, lifting weights does not stunt a child's growth. In fact, when done properly, resistance training has no negative effect on bone development.
Let's dive right in and clear up the confusion. Experts from places like the University of Texas and our own experience at Jump-n-Rise agree: Gym classes are good for kids. With the right guidance and moves, these classes won't stop them from growing taller. Actually, they help kids grow up healthy and strong.
There have been some concerns that strength training is not good for children who have not entered puberty. Studies have suggested that weight training might harm a child's growth, lead to injuries or not increase muscle strength.
With a change in environment, through adoption, emigration or with treatment of the disease there is usually definite catch-up growth, although it is often not to the NCHS standards. If puberty is delayed and/or growth continues into the early or mid twenties, then an acceptable final adult height is achieved.
'The 3-3-3 split is simply three strength sessions, three cardio days and three active recovery days across the week,' says personal trainer Aimee Victoria Long. 'I think it's trending because it feels clear, achievable and balanced – women are craving structure that supports their energy, not drains it. '
Exercise can transiently block the expression of statural growth by competitively removing the necessary nutritional support for growth. Statural growth retardation can be corrected by catch-up growth, but stunting may also be permanent (depending on the timing and magnitude of the energy drain).
Basic Strength Training (9-12 years old): Introduce basic strength training exercises with light weights or bodyweight. Activities like squats, lunges, pushes, and pulls are perfect. Prioritise proper technique before increasing intensity.
With adult supervision and guidance from an exercise physiologist, children as young as seven or eight years old can safely start resistance training at the gym. Engaging in resistance training not only helps children reach their sporting goals but also promotes a healthy and active lifestyle.
A child of 7 or 8 may be old enough to use free weights. But the child should know to be careful with them and lift them safely under supervision. A general rule about strength training is: If a child is old enough to take part in organized sports, then they're likely old enough to begin training with weights.
Contrary to popular belief, scientific studies consistently debunk the myth that weight training stunts a child's growth.
Teens might have slower growth if they: don't get enough protein, calories, and other nutrients in their diet. have a long-lasting (chronic) medical condition, such as problems with the kidneys, heart, lungs, and intestines.
What kills muscle gains most are poor recovery (lack of sleep, overtraining, high stress/cortisol), insufficient or poor-quality nutrition (not enough protein/carbs, excessive processed foods/sugar/alcohol), and inefficient training (too much cardio, bad form, focusing on isolation over compound lifts). Chronic stress elevates cortisol, which breaks down muscle, while inadequate protein, calories, and sleep directly impede repair and growth, making recovery paramount.
In other words 3x10 is generally considered better for hypertrophy but if you compare it to someone who does 5x5 and hits the same muscle 3x a week, that other person will not only develop more strength but more than likely put on more mass as their volume is significantly higher.
The 70/30 rule in fitness suggests that 70% of your physical results (especially weight loss and body composition) come from nutrition and diet, while only 30% comes from exercise (gym workouts), emphasizing that what you eat is far more crucial for changing your physique than just working out, though both are important for overall health and muscle building. It highlights that while the gym breaks down muscles (the 30% effort), the kitchen (the 70%) provides the essential fuel, protein, and rest for them to repair and grow stronger.
Evidence suggests that stunting is largely irreversible after the first 1000 days, leading to an intergenerational cycle of poor growth and development, in which women who were stunted in childhood remain stunted as adults and tend to have stunted offspring.
Growing bodies need a wide variety of vitamins and minerals to fuel growth. That's why kids should eat a well-balanced diet chock full of fruits and vegetables, whole grains, lean proteins and low-fat dairy. But during puberty, it's especially important kids are getting enough: Calcium and vitamin D.
What age is it safe to lift weights? Young athletes can begin a strength training program around the same time they begin to play organized sports, as early as 7 or 8 years old if they express interest and are mature enough to follow directions.
So, does working out make you taller? The answer is no, not directly. Exercise cannot change your genetic height potential or physically lengthen your bones. However, it plays a significant role in supporting overall growth and development, especially during the formative years.
Lifting weights safely before puberty can improve physical health. While it may not significantly increase muscle mass, it can help in improving overall strength and coordination. Weightlifting does not stunt growth, contrary to popular belief.