With feet flat on the floor, legs slightly bent and back flat on the floor, clasp your hands together over the centre of your chest.
Using the abdomen, sit up almost straight.
Maintain a straight back and keep the same distance from the chest as when you start the situp.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.