Since a health scare two years ago This Working Life presenter Lisa Leong has been using science and technology to try help her body and brain function better.

ABC science journalist Jo Khan puts her body on the line to trial a couple of these biohacks and, together with neuroscientist Jonathan Webb, runs the research filter them to sort which are useful from those which are a waste of time and money.

• Blue light blockers

• Long cold showers

• Light emitting ear buds

Then executive coach Karen Gately unpacks whether you can be both a boss and a friend.