It seems like for ultimate blade strength, you’d go with a titanium alloy — a combination of titanium and several other elements like iron, chromium, cobalt, nickel, etc. As for sharpness, you’d be looking at the volcanic glass known as obsidian, which can have a cutting edge merely nanometers thick. (Except you couldn’t in reality use obsidian because it fractures too easily.) Its Game of Thrones correlate is dragonglass, another one of those materials that Jon, Daenerys, and every other breathing thing is going to need to fight off the army of the dead.
If you’re over 50, a study in the British Medical Journal suggests the best results come from combining aerobic and resistance exercise , which could include anything from high-intensity interval training, like the 7-minute workout , to dynamic flow yoga , which intersperses strength-building poses like planks and push-ups with heart-pumping dance-like moves. Another study published in May provides some additional support to that research, finding that in adults aged 60-88, walking for 30 minutes four days a week for 12 weeks appeared to strengthen connectivity in a region of the brain where weakened connections have been linked with memory loss.