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Growth curve: Your baby's development

The first year is full of developmental milestones: Eight growth spurts shape your baby's physical and mental development. Learn when these spurts occur, what changes they bring, and how you can lovingly support your child during this exciting time.


The 8 Growth Spurts in Babies During the First Year – Development, Signs & Practical Tips

 

1st Spurt (5th Week) Your baby consciously perceives sounds & movements and gives you their first real smile. Neck muscles are strengthened during this phase. Tip: Wrap bodysuits & rompers make dressing easier.

 

2nd Spurt (8th Week) Senses sharpen: colors become clearer, stranger anxiety begins. Colic can occur more often. Closeness and warmth provide security. Tip: The Velcro-attached KUDDY by sticklett warming cushion stays where it belongs, keeping your baby warm without slipping.

 

3rd Spurt (12th Week) Physical turbo: up to 5 cm growth & 1 kg weight gain. Your baby discovers hands and toys. Tip: Grow-with-me baby clothes can be extended and widened by several centimeters.

 

4th Spurt (19th Week) This spurt is considered particularly intense. Motor skills and perception develop rapidly. Babies grasp objects intentionally, turn over more frequently, and often sleep more restlessly.

Many parents report the following during this phase:

  • frequent awakenings
  • intense tossing and turning in bed
  • altered movement patterns
  • restless sleep despite tiredness

 

MARY by sticklett, the Vital Sensor System, helps you better understand your baby's sleep behavior. In the app, you can track sleep patterns, activity, and position over time and recognize whether a restless night was just a phase or if a new pattern is developing. This makes it easier to see changes in context – for example, after an exciting day, a new developmental spurt, or with physical discomfort.

 


5th Spurt (26th Week)
Your baby realizes that they can't achieve everything immediately. Frustration is now part of it. Closeness, patience, and reliability are especially important.

Recognizing changes in babies

 

6th Spurt (33rd–35th Week) Rolling, turning, first crawling attempts – movement is now the focus. Your baby wants to discover the world. Crawling pants with anti-slip pads are perfect companions.

 

7th Spurt (46th Week) Your baby pulls themselves up, walks with assistance, and may say their first words.

 

8th Spurt (51st Week) Personality emerges: "I want to do it alone!" First words and confident experimenting characterize this time. Our baby shirts with Velcro stickers can be customized by children.

Growth spurts in babies and toddlers


Conclusion: The first year is a mix of smiles, frustration, developmental spurts, and little sleep, but each step moves your baby forward. With patience, closeness, and practical helpers like the MARY Sensor, KUDDLY warming cushion, grow-with-me clothing or RUBBY crawling pants from sticklett, you are perfectly equipped to accompany this exciting journey.

Child growth characteristics

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