When dealing with a headache, try boiling one cup of apple cider vinegar and one cup of water in a pot. Pour into a heat proof bowl and put on the table or other safe place that you can lean over the bowl and cover your head with a towel. Inhale the steam for a few minutes to bring some relief.
The warning on mine says not to use prior to 4 months of age. My son was in his Jolly Jumper from 3 months. The directions of use are that if they can confidently hold up their head then they are fine.
Between the ages of 7 and 12 there is an increase in running speed and are able to skip. Jumping is also acquired better and there is an increase in throwing and kicking. They are able to bat and dribble a ball. (Age) Gross motor skills usually continue improving during adolescence. The peak of physical performance is before 30, between 18 and 26.