Begin with a long and neutral spine, an awareness of your breath, and the increasing stillness in body and mind.
Start by setting your timer for two minutes at first. If you have more time and want to experience first hand the changing nature of mind, physical sensations, and emotions, great. This is your experiment to see what is real and what is not. Stay attentive to your breath and when your mind wanders, with gentleness and loving kindness towards self, just return to the practice at hand for these unique and special moments. Have a wonderful experiment!