Shared links

• 79 best books to give as a gift - Product Hunt
• New AI can work out whether you're gay or straight from a photograph | Technology | The Guardian
• Color Tool - Material Design — Good tool for selecting theme colours
• What’s Your Heart-Rate Variability? It May Be Time to Find Out - WSJ — As the body gets the rest it needs, the sympathetic nervous system takes the upper hand, preparing the body for renewed activity. When that happens, heart-rate variability increases. Dr. Creswell says that in sports training, the idea is to have your heaviest workouts when your heart is most recovered—when your HRV is at its highest.
• Romance Novels, Generated by Artificial Intelligence — :D