MHSAA Provides Heat Acclimatization Reminders, Resources as 2025-26 Fall Season Approaches
By
Geoff Kimmerly
MHSAA.com senior editor
August 1, 2025
This summer has seen several stretches of hot and humid weather, and as student-athletes prepare to begin practices and competition schedules this month, the Michigan High School Athletic Association is again ramping up awareness of necessary hot-weather precautions as schools and families prepare for activity.
Each year, the MHSAA provides information to its member schools to help them prepare for hot-weather practice and game conditions during the late summer and early fall. Practices for all Fall 2025 sports – cross country, girls field hockey, football, Lower Peninsula girls golf, boys soccer, Lower Peninsula girls swimming & diving, Lower Peninsula boys and Upper Peninsula girls tennis, and volleyball – may begin Monday, Aug. 11.
The “Health & Safety” page of the MHSAA website has links to several information sources, including the MHSAA preseason publication Heat Ways, which is available for download and includes valuable information on heat management in addition to requirements and resources regarding head injuries, sudden cardiac arrest and emergency action plans. Heat Ways also includes a statement on air quality and its potential effects on activity, given especially the recent conditions resulting from wildfires and smoke they have created.
The first days of formal practices in hot weather should be more for heat acclimatization and instruction than the conditioning of athletes, and practices in such conditions need planning to become longer and more strenuous over a gradual progression of time. Schools also must consider moving practices to different locations or different times of day, or changing practice plans to include different activities depending on the conditions. Furthermore, football practice rules allow for only helmets to be worn during the first two days, only shoulder pads to be added on the third and fourth days, and full pads to not be worn until the fifth day of team practice.
The MHSAA advises student-athletes to make sure to hydrate all day long – beginning before practice, continuing during and also after practice is done. Water and properly-formulated sports drinks are the best choices for hydration. The National Federation of State High School Associations (NFHS) advises that a 6-to-8 percent carbohydrate formulation is the maximum that should be utilized in a sports drink, while fruit juices with greater than 8-percent carbohydrate content and carbonated soda can both result in a bloated feeling and abdominal cramping.
A number of member schools follow the MHSAA’s Model Policy for Managing Heat & Humidity, which while not mandated for member schools was adopted as a rule for MHSAA postseason competition in 2013. The plan directs schools to begin monitoring the heat index at the activity site once the air temperature reaches 80 degrees, and provides recommendations when the heat index reaches certain points, including ceasing activities when it rises above 104 degrees. (When the temperature is below 80 degrees, there is no combination of heat and humidity that will result in a need to curtail activity.) The model heat & humidity policy is outlined in a number of places on the MHSAA Website, including as part of Heat Ways.
Multi-Sport Participation Holds Steady in 2023-24, Continuing Increases Found Over Entirety of Study
By
Geoff Kimmerly
MHSAA.com senior editor
January 16, 2025
The MHSAA’s sixth Multi-Sport Participation Survey, conducted last spring for the 2023-24 school year, showed for the third-consecutive year that nearly 45 percent of athletes at member high schools participated in more than one sport, while the entirety of the study continues to show that percentages of multi-sport athletes for all four Classes (A-B-C-D) have grown during the six years this topic has been studied in this way.
Early and intense sport specialization has become one of the most serious issues related to health and safety at all levels of youth sports, as overuse injuries and burnout among athletes have been tied to chronic injuries and health-related problems later in life. In early 2016, the MHSAA appointed a Task Force on Multi-Sport Participation as part of a continued effort to promote and protect participant health and address the issues leading to early sport specialization. The annual Multi-Sport Participation Survey was among results of the task force’s work.
The 2023-24 Multi-Sport Participation Survey received responses from 63.7 percent of member high schools and showed 44.8 percent of athletes at those MHSAA member high schools participating in two or more sports, a tenth of a percent increase from survey results in 2022-23 and half a percent increase from two years prior.
For 2023-24, 47.6 percent of male athletes and 41.4 percent of female athletes played multiple sports. Class D has enjoyed the highest percentage of multi-sport athletes over all six years of surveys, this time at 63.1 percent, followed by Class C (59.4), Class B (48.0) and Class A (38.2).
Over the six years of this survey, data also has shown slight increases in multi-sport participation in all four classes. Class A has risen from 35.9 percent in 2017-18 to 38.2 in 2023-24. Class B has risen from 46.7 to 48.0, Class C from 55.2 to 59.4 and Class D from 58.1 to 63.1 over those six years.
The MHSAA Task Force also recommended measuring multi-sport participation in MHSAA member schools to recognize “achievers” – that is, schools that surpass the norm given their enrollment and other factors that affect school sports participation.
Battle Creek Harper Creek, Detroit Cody and Grand Rapids Northview have appeared among the top 10 percent of their respective Classes five of the six years the survey has been conducted. Five more schools have appeared among the top 10 percent of their Classes four of the six years: Decatur, East Grand Rapids, Manton, Parma Western and Warren Michigan Collegiate.
In Class A, Macomb L’Anse Creuse North (94.7 percent) and Battle Creek Harper Creek (72.4) posted the highest percentages of multi-sport athletes for 2023-24, with Grand Rapids Northview (68.1), Berkley (65.0) and Kalamazoo Loy Norrix (64.3) also reporting reaching at least 60 percent. In Class B, four schools reached at least 65 percent multi-sport participation – Parma Western (78.0), Constantine (75.4), Clare (65.7) and Reed City (65.4).
Class C saw six schools reach 80 percent this past school year – Warren Michigan Collegiate (91.7 percent), Flint Beecher (91.3), LeRoy Pine River (89.5), Cass City (84.3), Decatur (83.3) and Manton (81.4). Four Class D schools responded at higher than 90 percent multi-sport participation – Gaylord St. Mary (92.9), Lake Leelanau St. Mary (91.7), Wyoming West Michigan Lutheran (90.9) and Deckerville (90.7) – followed by Marcellus Howardsville Christian (88.9), Morrice (86.8), Ewen-Trout Creek (85.7), Vestaburg (85.5) and Alanson (85.0).
Click for the full summary report on the Multi-Sport Participation Survey.