The Longevity Code

123456
Across
  1. 3. Birds have it figured out, humans still in the process
  2. 5. An ancient cousin of gray wolf.
  3. 6. Another commonly used word for electicity
Down
  1. 1. Reset by sunlight and disrupted by jet lag
  2. 2. Found in dark chocolate and involved in 300+ reactions
  3. 4. Insect as well as a sport