Sleep strengthens some synapses
Mice show signs of stronger neuron connections when allowed to snooze after learning a trick
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/06/ls_new-synapse.jpg?fit=860%2C460&ssl=1)
SLEEP STUDY After a post-learning snooze, mouse nerve cells (shown) had more newly formed docking sites for other nerve cells (filled arrowheads).
G. Yang et al/Science 2014