Lectures on diet, exercise, and cognition. Lectures will be provided in person or online and will last approximately one hour.

The National Institute of Health (NIH) List Sorting Test measures a person's ability to store information for a short time while doing other tasks. It asks the subject to sort and put in order lists of both sounds and pictures. The lists may include animals to be sorted by size, foods to be sorted by size, or a combination of the two to be sorted by size. The minimum score is 0 and the maximum score is 26. A higher score indicates better working memory. The test takes about 7 minutes.

The Pattern Comparison test measures the subject's reaction time and how long it takes the subject to do a mental task. During the test, the subject will be asked to decide whether two visual patterns are the "same" or "not the same." The minimum score is 0 and the maximum score is 130. A higher score indicates better processing speed. The test takes 85 seconds.

The Timed Up and Go test (TUG) measures dynamic balance, leg strength and walking speed. For this test the subject will sit back in a chair with the hands in the lap. On go, the subject will get up, walk around a cone that is about 9 feet from the chair, walk back and sit back down. The subject will have one practice trial and two real trials. Healthy individuals between 60 and 80 years of age are expected to complete the TUG in 10 seconds or less. Lower scores indicate a better performance.

The Physical Performance Test tests daily skills. The subject is asked to write a sentence, pick up some beans from a table and put them in a coffee can, move a book from a table to a shoulder-high shelf, put on and take off a coat, pick up a penny from the floor, turn around 360 degrees, walk 50 feet, and climb up and down some flights of stairs. The minimum score is 0 and the maximum score is 36. A higher score indicates better ability to do daily activities. The test takes about 5 minutes.

The Hopkins Verbal Learning Test is a brief assessment of immediate recall, delayed recall and delayed recognition commonly used with populations with Alzheimer's disease, Huntington's disease and amnesic disorders. The maximum score for the test is 36 with scores below 14, indicating dementia. The minimum score is 0 and the maximum score is 36. A higher score indicates better working memory. The test takes about 5-10 minutes to take.

The Trail Making Test (TMT) is commonly used to screen for dementia by assessing the ability to think, reason, and remember. The score is how long it takes to complete the test. There is no minimal score, and the maximum score is 5 minutes. A lower the score the better the ability to reason and remember. The test takes about 7 minutes.

The six-minute walk test requires the subject to walk as far as possible in six minutes. The score is the distance traveled. The minimal score would be 0 and there is no maximum score. The further a person walks the better the cardiovascular condition. The test takes 6 minutes.

Maximal load that can be lifted in one repetition (1RM) will be assessed for in both leg press and chest press exercises. The loads on the testing equipment will be increased over 5 to 7 testing sets. The persons 1RM will be the highest load the person can move through the range of motion of the exercise. There are no minimum or maximum scores for this test.

The test typically takes 5 to 10 minutes. The higher the 1RM the stronger the person is.

The Dimensional Change Card Sort test is a measure of cognitive flexibility. Two target pictures are presented that vary along two dimensions (e.g., shape and color). Participants are asked to match a series of bivalent test pictures (e.g., yellow balls and blue trucks) to the target pictures, first according to one dimension (e.g., color) and then, after a number of trials, according to the other dimension (e.g., shape). "Switch" trials are also employed, in which the participant must change the dimension being matched. Scoring is based on a combination of accuracy and reaction time. Scores can range from 0-10. The higher the score, the better the capacity to switch from one concept to another. The test typically lasts four minutes.

The Flanker Test uses response inhibition to assess a subject's capacity to suppress incorrect responses within a particular context. The target (for this study an arrow) is flanked by non-target arrows that are either in the same direction as the target (congruent flankers), the opposite response (incongruent flankers), or to neither (neutral flankers). The minimum score is 0 and the maximum score is 10. A higher score indicates better accuracy. The test takes about 3 minutes.

This test measures the power a person can produce at maximal speed using a load of 50% of 1RM for the chest press and leg press. There are no minimum or maximum scores. The higher score is better. Power shows how fast a person can do work. The test typically takes about five minutes.