Train your body for a better brain size...

The physical activity in middle ages has been lined with better healthy of brain later in life.

Sources

Poor Physical Fitness In Middle Age Linked To Smaller Brain Size Later In Life | IFLScience

Exercise Capacity - Clinical Methods - NCBI Bookshelf

"Interfacing" graphene to neurons

New method for build graphene-based electrodes,

Neural-interfaces rely on the ability of electrodes to transduce stimuli into electrical patterns delivered to the brain. In addition to sensitivity to the stimuli, stability in the operating conditions and efficient charge transfer to neurons, the electrodes should not alter the physiological properties of the target tissue.

"For the first time we interfaced graphene to neurons directly," said Professor Laura Ballerini of the University of Trieste in Italy. "We then tested the ability of neurons to generate electrical signals known to represent brain activities, and found that the neurons retained their neuronal signalling properties unaltered. This is the first functional study of neuronal synaptic activity using uncoated graphene based materials."

Sources

Graphene shown to safely interact with neurons in the brain

Graphene-Based Interfaces Do Not Alter Target Nerve Cells - ACS Nano (ACS Publications)