Everyone has great points here. I took up intermittent fasting where I eat within an 8 hour window. Normally, I only eat one huge meal per day. It saves me time too. I also use a kettlebell and keep it by my workspace (It basically taunts me to workout). In 15 minutes I can get a full body workout and I have left my work for that time and cleared my head which makes me way more productive for the rest of the day.