1 There are two ways to get involved in the GNEM-DMP: the patient-reported part, or online registry; and the physician-reported part, or natural history study.  Even if you are participating in another registry, natural history study or clinical trial, you can still participate in the GNEM-DMP.
New bonds will form between the two hydrogen atoms and the single oxygen atom in the water molecule that is formed as the product. For bonds to break, energy must be absorbed. When new bonds form, energy is released. The energy that is needed to break a bond is called the bond energy or bond dissociation energy.
As you said, it's true that breaking bonds always absorbs energy. But breaking bonds is just halfway through for a chemical reaction. Forming new ones releases energy. The difference within determines a chemical reaction endothermic or exothermic. For ATP hydrolysis, the bonds within an ATP and a water molecule break, which absorbs energy, as you might think. Then the new bonds formation to form an ADP and a phosphate releases a lot of energy.